Article(id=1322282196682003325, tenantId=1146029695717560320, journalId=1220038251117760515, issueId=1322281938308677669, articleNumber=null, orderNo=null, doi=10.11868/j.issn.1001-4381.2025.000666, pmid=null, cstr=32421.14.j.issn.1001-4381.2025.000666, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1763308800000, receivedDateStr=2025-11-17, revisedDate=null, revisedDateStr=null, acceptedDate=1767542400000, acceptedDateStr=2026-01-05, onlineDate=1793186242503, onlineDateStr=2026-10-28, pubDate=1784476800000, pubDateStr=2026-07-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793186242503, onlineIssueDateStr=2026-10-28, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793186242503, creator=13701087609, updateTime=1793186242503, updator=13701087609, issue=Issue{id=1322281938308677669, tenantId=1146029695717560320, journalId=1220038251117760515, year='2026', volume='54', issue='7', pageStart='1', pageEnd='347', issueExtLink='null', onlineDate='null', pubDate='1784476800000', pubDateStr='2026-07-20', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=0, createTime=1793186180903, creator='13701087609', updateTime=1793186267843, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1322282303045349604, tenantId=1146029695717560320, journalId=1220038251117760515, issueId=1322281938308677669, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1322282303045349605, tenantId=1146029695717560320, journalId=1220038251117760515, issueId=1322281938308677669, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=71, endPage=82, ext={EN=ArticleExt(id=1322282196845581182, articleId=1322282196682003325, tenantId=1146029695717560320, journalId=1220038251117760515, language=EN, title=Effect of laser remelting on surface roughness, mechanical and functional properties of NiTi alloy fabricated by laser powder bed fusion, columnId=1322282006344483370, journalTitle=Journal of Materials Engineering, columnName=HIGH-PERFORMANCE SHAPE MEMORY MATERIALS COLUMN, runingTitle=null, highlight=null, articleAbstract=
NiTi alloy has garnered significant attention due to its unique functional properties, and laser powder bed fusion has become the mainstream additive manufacturing technique for producing NiTi alloy components. However, the surface roughness of as-fabricated parts is generally too high to permit direct assembly and application, and it is difficult to reduce via conventional machining. Laser remelting, as a non-contact surface treatment technique, can modify the surface morphology and microstructure of materials. This work aims to reduce the surface roughness of NiTi alloy fabricated by laser powder bed fusion through laser remelting, and to elucidate its effects on the mechanical and functional properties of the alloy. Based on experimental data, a regression equation relating the laser remelting process parameters to surface roughness is established. The optimal parameter combination is determined through response surface optimization. The differences in mechanical properties and superelasticity of the alloy before and after laser remelting are evaluated, and the underlying mechanisms are analyzed via microstructure characterization. The results show that the optimal parameter combination for laser remelting is a defocusing distance of 175 mm, a spot diameter of 0.1 mm, a pulse frequency of 250 MHz, a laser power of 60.2 W, and a scanning speed of 1966.4 mm/s. After remelting, the roughness of the alloy decreases from 8.04 μm to 0.763 μm, the tensile strength increases from 588 MPa to 656 MPa, and the stable recoverable strain in tensile superelasticity improves from 2.1% to 2.8%. The enhancement in strength can be primarily attributed to grain refinement in the remelted surface layer, while the improved superelastic stability and recoverable strain result from the synergistic effects of grain refinement and the precipitation of Ti2Ni phase.
, authors=Sizhan LIU
1, Weisi CAI
1, 2, Tao LONG
3, Pengxu LI
1, Chao YANG
1, authorsList=Sizhan LIU, Weisi CAI, Tao LONG, Pengxu LI, Chao YANG, authorCompany=null, correspAuthors=Weisi CAI, Chao YANG, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1322282198816904082, articleId=1322282196682003325, tenantId=1146029695717560320, journalId=1220038251117760515, language=CN, title=激光重熔对激光粉末床熔融NiTi合金表面粗糙度、力学性能及功能特性的影响, columnId=1322282006491284012, journalTitle=材料工程, columnName=高性能形状记忆材料专栏, runingTitle=null, highlight=null, articleAbstract=
NiTi合金以其独特的功能特性受到关注,激光粉末床熔融是当前增材制造NiTi合金零件的主流技术,但所得零件表面粗糙度通常过高而无法直接装配应用,且难以通过常规机加工改善。激光重熔是一种非接触式表面加工技术,能够改变材料的表面形貌和微观结构。本工作以激光重熔改善激光粉末床熔融NiTi合金的表面粗糙度并明确其对合金力学性能和功能特性的影响为目标,基于实验建立激光重熔工艺参数关于表面粗糙度的回归方程,通过响应面优化求解得最优参数组合,测试了重熔处理前后合金的力学性能和超弹性差异,通过微观结构表征分析其机理。结果表明,激光重熔的最优参数组合:离焦量175 mm、光斑直径0.1 mm、脉冲频率250 MHz、激光功率60.2 W、扫描速度1966.4 mm/s,重熔处理后合金表面粗糙度由8.04 μm降至0.763 μm,拉伸强度由588 MPa升至656 MPa,拉伸超弹性稳定可回复应变由2.1%增至2.8%。强度升高可归因于重熔处理面的晶粒细化,超弹性稳定性和可回复应变的提升则是晶粒细化和Ti2Ni相析出协同作用的结果。
, authors=刘思沾
1, 蔡潍锶
1, 2, 龙涛
3, 李鹏旭
1, 杨超
1, authorsList=刘思沾, 蔡潍锶, 龙涛, 李鹏旭, 杨超, authorCompany=null, correspAuthors=蔡潍锶, 杨超, authorNote=null, correspAuthorsNote=
蔡潍锶(1997—),女,博士,主要从事形状记忆合金增材制造的研究,联系地址:中国香港薄扶林道香港大学机械工程系(999077),E-mail:
caiweisi@hku.hk杨超(1977—),男,教授,博士,主要从事金属新材料制备与成形的研究,联系地址:广东省广州市天河区五山路华南理工大学38号楼国家金属材料近净成形工程技术研究中心(510641),E-mail:
cyang@scut.edu.cn, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=y/o+o8Ey2mszXSXfwAmzKw==, magXml=/scbbMRNexh4A2rwRy8VHg==, pdfUrl=null, pdf=hFh8LeWJTPJHGqYtDTyelw==, pdfFileSize=8516725, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=hIUQSoeCeo9aN0OKv0FvwA==, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=sFXu8FRaK4/dVCxpQFe0Hw==, mapNumber=null, fund=null)}, authors=[Author(id=1322282199806759837, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1322282199882257311, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, authorId=1322282199806759837, language=EN, stringName=Sizhan LIU, firstName=Sizhan, middleName=null, lastName=LIU, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, address=
1.Guangdong Provincial Key Laboratory for Processing and Forming of Advanced Metallic Materials,National Engineering Research Center of Near-Net-Shape Forming for Metallic Materials,South China University of Technology,Guangzhou 510641,China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1322282199953560480, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, authorId=1322282199806759837, language=CN, stringName=刘思沾, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, address=
1.华南理工大学 国家金属材料近净成形工程技术研究中心 广东省金属新材料制备与 成形重点实验室,广州 510641, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1322282199525741459, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, xref=1., ext=[AuthorCompanyExt(id=1322282199550907284, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, companyId=1322282199525741459, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1.Guangdong Provincial Key Laboratory for Processing and Forming of Advanced Metallic Materials,National Engineering Research Center of Near-Net-Shape Forming for Metallic Materials,South China University of Technology,Guangzhou 510641,China), AuthorCompanyExt(id=1322282199559295893, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, companyId=1322282199525741459, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1.华南理工大学 国家金属材料近净成形工程技术研究中心 广东省金属新材料制备与 成形重点实验室,广州 510641)])]), Author(id=1322282200041640866, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, orderNo=1, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=caiweisi@hku.hk, emailSecond=null, emailThird=null, correspondingAuthor=1, authorType=1, ext={EN=AuthorExt(id=1322282200129721253, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, authorId=1322282200041640866, language=EN, stringName=Weisi CAI, firstName=Weisi, middleName=null, lastName=CAI, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, 2, address=
1.Guangdong Provincial Key Laboratory for Processing and Forming of Advanced Metallic Materials,National Engineering Research Center of Near-Net-Shape Forming for Metallic Materials,South China University of Technology,Guangzhou 510641,China
2.Department of Mechanical Engineering,The University of Hong Kong,Hong Kong 999077,China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1322282200196830118, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, authorId=1322282200041640866, language=CN, stringName=蔡潍锶, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, 2, address=
1.华南理工大学 国家金属材料近净成形工程技术研究中心 广东省金属新材料制备与 成形重点实验室,广州 510641
2.香港大学 机械工程系,香港 999077, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1322282199525741459, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, xref=1., ext=[AuthorCompanyExt(id=1322282199550907284, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, companyId=1322282199525741459, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1.Guangdong Provincial Key Laboratory for Processing and Forming of Advanced Metallic Materials,National Engineering Research Center of Near-Net-Shape Forming for Metallic Materials,South China University of Technology,Guangzhou 510641,China), AuthorCompanyExt(id=1322282199559295893, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, companyId=1322282199525741459, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1.华南理工大学 国家金属材料近净成形工程技术研究中心 广东省金属新材料制备与 成形重点实验室,广州 510641)]), AuthorCompany(id=1322282199634793366, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, xref=2., ext=[AuthorCompanyExt(id=1322282199643181975, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, companyId=1322282199634793366, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2.Department of Mechanical Engineering,The University of Hong Kong,Hong Kong 999077,China), AuthorCompanyExt(id=1322282199655764888, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, companyId=1322282199634793366, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2.香港大学 机械工程系,香港 999077)])]), Author(id=1322282200263938984, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, orderNo=2, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1322282200335242154, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, authorId=1322282200263938984, language=EN, stringName=Tao LONG, firstName=Tao, middleName=null, lastName=LONG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
3, address=
3.Guangdong Institute of Special Equipment Inspection and Research Foshan Branch,Foshan 528200,Guangdong,China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1322282200393962411, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, authorId=1322282200263938984, language=CN, stringName=龙涛, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
3, address=
3.广东省特种设备检测研究院佛山分院,广东 佛山 528200, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1322282199714485145, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, xref=3., ext=[AuthorCompanyExt(id=1322282199722873754, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, companyId=1322282199714485145, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
3.Guangdong Institute of Special Equipment Inspection and Research Foshan Branch,Foshan 528200,Guangdong,China), AuthorCompanyExt(id=1322282199731262363, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, companyId=1322282199714485145, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
3.广东省特种设备检测研究院佛山分院,广东 佛山 528200)])]), Author(id=1322282200465265581, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, orderNo=3, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1322282200532374447, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, authorId=1322282200465265581, language=EN, stringName=Pengxu LI, firstName=Pengxu, middleName=null, lastName=LI, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, address=
1.Guangdong Provincial Key Laboratory for Processing and Forming of Advanced Metallic Materials,National Engineering Research Center of Near-Net-Shape Forming for Metallic Materials,South China University of Technology,Guangzhou 510641,China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1322282200603677616, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, authorId=1322282200465265581, language=CN, stringName=李鹏旭, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, address=
1.华南理工大学 国家金属材料近净成形工程技术研究中心 广东省金属新材料制备与 成形重点实验室,广州 510641, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1322282199525741459, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, xref=1., ext=[AuthorCompanyExt(id=1322282199550907284, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, companyId=1322282199525741459, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1.Guangdong Provincial Key Laboratory for Processing and Forming of Advanced Metallic Materials,National Engineering Research Center of Near-Net-Shape Forming for Metallic Materials,South China University of Technology,Guangzhou 510641,China), AuthorCompanyExt(id=1322282199559295893, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, companyId=1322282199525741459, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1.华南理工大学 国家金属材料近净成形工程技术研究中心 广东省金属新材料制备与 成形重点实验室,广州 510641)])]), Author(id=1322282200670786482, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, orderNo=4, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=cyang@scut.edu.cn, emailSecond=null, emailThird=null, correspondingAuthor=1, authorType=1, ext={EN=AuthorExt(id=1322282200742089652, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, authorId=1322282200670786482, language=EN, stringName=Chao YANG, firstName=Chao, middleName=null, lastName=YANG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, address=
1.Guangdong Provincial Key Laboratory for Processing and Forming of Advanced Metallic Materials,National Engineering Research Center of Near-Net-Shape Forming for Metallic Materials,South China University of Technology,Guangzhou 510641,China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1322282200805004213, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, authorId=1322282200670786482, language=CN, stringName=杨超, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, address=
1.华南理工大学 国家金属材料近净成形工程技术研究中心 广东省金属新材料制备与 成形重点实验室,广州 510641, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1322282199525741459, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, xref=1., ext=[AuthorCompanyExt(id=1322282199550907284, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, companyId=1322282199525741459, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1.Guangdong Provincial Key Laboratory for Processing and Forming of Advanced Metallic Materials,National Engineering Research Center of Near-Net-Shape Forming for Metallic Materials,South China University of Technology,Guangzhou 510641,China), AuthorCompanyExt(id=1322282199559295893, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, companyId=1322282199525741459, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1.华南理工大学 国家金属材料近净成形工程技术研究中心 广东省金属新材料制备与 成形重点实验室,广州 510641)])])], keywords=[Keyword(id=1322282200897278902, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, language=EN, orderNo=1, keyword=shape memory alloy), Keyword(id=1322282200955999159, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, language=EN, orderNo=2, keyword=additive manufacture), Keyword(id=1322282201014719416, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, language=EN, orderNo=3, keyword=laser remelting), Keyword(id=1322282201069245369, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, language=EN, orderNo=4, keyword=response surface optimization), Keyword(id=1322282201123771322, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, language=CN, orderNo=1, keyword=形状记忆合金), Keyword(id=1322282201186685883, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, language=CN, orderNo=2, keyword=增材制造), Keyword(id=1322282201245406140, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, language=CN, orderNo=3, keyword=激光重熔), Keyword(id=1322282201304126397, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, language=CN, orderNo=4, keyword=响应面优化)], refs=[Reference(id=1322282204370162653, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, doi=null, pmid=null, pmcid=null, year=2025, volume=1035, issue=null, pageStart=181340, pageEnd=null, url=null, language=null, rfNumber=[1], rfOrder=0, authorNames=MA G Y, WANG J, DI T D, journalName=Journal of Alloys and Compounds, refType=null, unstructuredReference=
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324:132665., articleTitle=Microstructure of NiTi superelastic alloy manufactured by selective laser melting, refAbstract=null)], funds=[Fund(id=1322282204110115802, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, awardId=52371027, language=CN, fundingSource=国家自然科学基金项目(52371027), fundOrder=null, country=null), Fund(id=1322282204189807579, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, awardId=U24A2025, language=CN, fundingSource=国家自然科学基金项目(U24A2025), fundOrder=null, country=null), Fund(id=1322282204265305052, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, awardId=GJ202401, language=CN, fundingSource=广东省金属新材料制备与成形重点实验室开放课题(GJ202401), fundOrder=null, country=null)], companyList=[AuthorCompany(id=1322282199525741459, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, xref=1., ext=[AuthorCompanyExt(id=1322282199550907284, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, companyId=1322282199525741459, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1.Guangdong Provincial Key Laboratory for Processing and Forming of Advanced Metallic Materials,National Engineering Research Center of Near-Net-Shape Forming for Metallic Materials,South China University of Technology,Guangzhou 510641,China), AuthorCompanyExt(id=1322282199559295893, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, companyId=1322282199525741459, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1.华南理工大学 国家金属材料近净成形工程技术研究中心 广东省金属新材料制备与 成形重点实验室,广州 510641)]), AuthorCompany(id=1322282199634793366, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, xref=2., ext=[AuthorCompanyExt(id=1322282199643181975, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, companyId=1322282199634793366, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2.Department of Mechanical Engineering,The University of Hong Kong,Hong Kong 999077,China), AuthorCompanyExt(id=1322282199655764888, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, companyId=1322282199634793366, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2.香港大学 机械工程系,香港 999077)]), AuthorCompany(id=1322282199714485145, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, xref=3., ext=[AuthorCompanyExt(id=1322282199722873754, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, companyId=1322282199714485145, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
3.Guangdong Institute of Special Equipment Inspection and Research Foshan Branch,Foshan 528200,Guangdong,China), AuthorCompanyExt(id=1322282199731262363, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, companyId=1322282199714485145, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
3.广东省特种设备检测研究院佛山分院,广东 佛山 528200)])], figs=[ArticleFig(id=1322282201425761214, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, language=EN, label=Fig.1, caption=
Experimental material and fabricating process used in this work(a)morphology and composition distribution of NiTi alloy powders;(b)particle size distribution of NiTi alloy powders;(c)schematic diagram of scanning strategy during LPBF process;(d)LPBF-NiTi bulk samples, figureFileSmall=fcIHkK/bcV+/tgrL+PQ71w==, figureFileBig=hIUQSoeCeo9aN0OKv0FvwA==, tableContent=null), ArticleFig(id=1322282201484481471, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, language=CN, label=图1, caption=
本工作采用的实验材料及成型工艺(a)NiTi合金粉末形貌及成分分布;(b)NiTi合金粉末粒径分布;(c)LPBF过程中扫描策略示意图;(d)LPBF-NiTi块体样品, figureFileSmall=fcIHkK/bcV+/tgrL+PQ71w==, figureFileBig=hIUQSoeCeo9aN0OKv0FvwA==, tableContent=null), ArticleFig(id=1322282201660642240, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, language=EN, label=Fig.2, caption=
Schematic diagram of laser remelting on sample surface(a),and dimensions of tensile specimens used for mechanical and functional property testing(b), figureFileSmall=f7Z7XCUHEggCDK11WCQC1g==, figureFileBig=drhzwcqAazyg59M3sgzbDA==, tableContent=null), ArticleFig(id=1322282201719362497, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, language=CN, label=图2, caption=
样品表面激光重熔原理(a)及力学性能和功能特性测试所用拉伸试样尺寸(b), figureFileSmall=f7Z7XCUHEggCDK11WCQC1g==, figureFileBig=drhzwcqAazyg59M3sgzbDA==, tableContent=null), ArticleFig(id=1322282201782277058, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, language=EN, label=Fig.3, caption=
Surface morphologies of LPBF-NiTi after single track laser remelting treatment with different defocusing distances(a),spot diameters(b),and laser powers(c), figureFileSmall=F9Rx6pvU/sJOveMyeq+f5Q==, figureFileBig=COrU0z+ujMmMwUzrfGFjLA==, tableContent=null), ArticleFig(id=1322282201945854915, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, language=CN, label=图3, caption=
以不同离焦量(a)、光斑直径(b)和激光功率(c)对LPBF-NiTi做单道次激光重熔处理所得表面形貌, figureFileSmall=F9Rx6pvU/sJOveMyeq+f5Q==, figureFileBig=COrU0z+ujMmMwUzrfGFjLA==, tableContent=null), ArticleFig(id=1322282202017158084, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, language=EN, label=Fig.4, caption=
Contour maps and response surfaces of roughness affected by laser power and scanning speed under different pulse frequency conditions(a),(b)pulse frequency is 250 MHz;(c),(d)pulse frequency is 500 MHz, figureFileSmall=nAIcV6osidwOuEuiRzwh0g==, figureFileBig=ePJjo/XZHmQofdqg8+wRcg==, tableContent=null), ArticleFig(id=1322282202075878341, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, language=CN, label=图4, caption=
不同脉冲频率条件下激光功率和扫描速度交互作用的表面粗糙度等高线图和响应面(a),(b)脉冲频率250 MHz;(c),(d)脉冲频率500 MHz, figureFileSmall=nAIcV6osidwOuEuiRzwh0g==, figureFileBig=ePJjo/XZHmQofdqg8+wRcg==, tableContent=null), ArticleFig(id=1322282202147181510, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, language=EN, label=Fig.5, caption=
Surface morphology(1) and roughness(2) distribution curves of LPBF-NiTi remelted with different parameter combinations (a)Solution 1;(b)Solution 2;(c)Solution 3, figureFileSmall=bqhrTwWTVrHDY1bQykHuSQ==, figureFileBig=/h2vANGjdeYWaSfqr2e+wQ==, tableContent=null), ArticleFig(id=1322282202260427719, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, language=CN, label=图5, caption=
以不同参数组合重熔处理LPBF-NiTi所得表面三维形貌(1)和粗糙度(2)分布曲线(a)Solution 1;(b)Solution 2;(c)Solution 3, figureFileSmall=bqhrTwWTVrHDY1bQykHuSQ==, figureFileBig=/h2vANGjdeYWaSfqr2e+wQ==, tableContent=null), ArticleFig(id=1322282202377868232, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, language=EN, label=Fig.6, caption=
Mechanical properties of specimens before and after laser remelting treatment(a)tensile stress-strain curves at room temperature;(b)microhardness of cross section, figureFileSmall=3UOrKQUvFLhXj4GW7czkIQ==, figureFileBig=rAgrCd4ByLbs96zQZjs2Bw==, tableContent=null), ArticleFig(id=1322282202444977097, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, language=CN, label=图6, caption=
激光重熔处理前后试样的力学性能(a)室温拉伸应力-应变曲线;(b)截面显微硬度, figureFileSmall=3UOrKQUvFLhXj4GW7czkIQ==, figureFileBig=rAgrCd4ByLbs96zQZjs2Bw==, tableContent=null), ArticleFig(id=1322282202503697354, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, language=EN, label=Fig.7, caption=
Phase transformation behavior and tensile superelasticity of samples before and after laser remelting treatment(a)DSC curves of samples T0 and T1;(b)10 cycles of tensile superelastic stress-strain curve of sample T0;(c)residual strain of sample T0 after superelastic cycling;(d)10 cycles of tensile superelastic stress-strain curve of sample T1;(e)residual strain of sample T1 after superelastic cycling;(f)recoverable strain of two samples in each cycle, figureFileSmall=WfwAE4/VoAQPVmHs/bvOCg==, figureFileBig=rRXNuuP375EQUYOywFjERQ==, tableContent=null), ArticleFig(id=1322282202570806219, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, language=CN, label=图7, caption=
激光重熔处理前后试样的相变行为和拉伸超弹性(a)样品T0和T1的DSC曲线;(b)样品T0的10次拉伸超弹性循环应力-应变曲线;(c)样品T0经超弹性循环后残余应变;(d)样品T1的10次拉伸超弹性循环应力-应变曲线;(e)样品T1经超弹性循环后残余应变;(f)两样品历次可回复应变, figureFileSmall=WfwAE4/VoAQPVmHs/bvOCg==, figureFileBig=rRXNuuP375EQUYOywFjERQ==, tableContent=null), ArticleFig(id=1322282202633720780, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, language=EN, label=Fig.8, caption=
Microscopic surface morphology of samples T0 and T1(a)-(c)different regions of T0 surface;(d)-(f)remelted surface of T1 under different magnification ratios, figureFileSmall=hTSYA4bObhy2kvODMatW3A==, figureFileBig=vUggY5PA0d80LPaLRaeUKA==, tableContent=null), ArticleFig(id=1322282202797298637, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, language=CN, label=图8, caption=
样品T0和T1的表面微观形貌(a)~(c)T0的成型表面不同区域;(d)~(f)T1的重熔表面不同放大倍率, figureFileSmall=hTSYA4bObhy2kvODMatW3A==, figureFileBig=vUggY5PA0d80LPaLRaeUKA==, tableContent=null), ArticleFig(id=1322282202893767630, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, language=EN, label=Fig.9, caption=
EBSD images of samples T0 and T1 (a)fabrication surface of T0;(b)laser remelted surface of T1, figureFileSmall=iMBi41eGW+YoV7+HUZ50+A==, figureFileBig=Bu7RGUE761DiU8tslCUF2w==, tableContent=null), ArticleFig(id=1322282202990236623, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, language=CN, label=图9, caption=
样品T0和T1的表面EBSD图像 (a)T0的成型表面;(b)T1的激光重熔表面, figureFileSmall=iMBi41eGW+YoV7+HUZ50+A==, figureFileBig=Bu7RGUE761DiU8tslCUF2w==, tableContent=null), ArticleFig(id=1322282203178980304, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, language=EN, label=Table 1, caption=
Process parameters and adjustable range of M7 pulsed fiber laser
, figureFileSmall=null, figureFileBig=null, tableContent=
| Wavelength/nm | Pulse width/ns | f/MHz | Defocusing distance/mm | Spot diameter/mm | L/W | V/(mm·s-1) |
|---|
| 1064 | 2 | 250,500 | 165-185 | 0.05-0.25 | 0-100 | 0-2000 |
), ArticleFig(id=1322282203288032209, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, language=CN, label=表1, caption=
M7型脉冲光纤激光器的工艺参数及可调范围
, figureFileSmall=null, figureFileBig=null, tableContent=
| Wavelength/nm | Pulse width/ns | f/MHz | Defocusing distance/mm | Spot diameter/mm | L/W | V/(mm·s-1) |
|---|
| 1064 | 2 | 250,500 | 165-185 | 0.05-0.25 | 0-100 | 0-2000 |
), ArticleFig(id=1322282203355141074, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, language=EN, label=Table 2, caption=
Experimental parameters and corresponding surface roughness of laser remelted samples
, figureFileSmall=null, figureFileBig=null, tableContent=
| Sample | L/W | V/(mm·s-1) | f/MHz | Ra/μm |
|---|
| LPBF-NiTi | | | | 8.04 |
| #1 | 40 | 1000 | 250 | 5.38 |
| #2 | 40 | 1500 | 250 | 2.37 |
| #3 | 40 | 2000 | 250 | 1.58 |
| #4 | 40 | 1000 | 500 | 4.23 |
| #5 | 40 | 1500 | 500 | 3.18 |
| #6 | 40 | 2000 | 500 | 2.13 |
| #7 | 60 | 1000 | 250 | 4.37 |
| #8 | 60 | 1500 | 250 | 1.65 |
| #9 | 60 | 2000 | 250 | 1.38 |
| #10 | 60 | 1000 | 500 | 2.88 |
| #11 | 60 | 1500 | 500 | 2.48 |
| #12 | 60 | 2000 | 500 | 1.76 |
| #13 | 80 | 1000 | 250 | 3.64 |
| #14 | 80 | 1500 | 250 | 3.12 |
| #15 | 80 | 2000 | 250 | 1.88 |
| #16 | 80 | 1000 | 500 | 3.37 |
| #17 | 80 | 1500 | 500 | 3.08 |
| #18 | 80 | 2000 | 500 | 2.86 |
), ArticleFig(id=1322282203418055635, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, language=CN, label=表2, caption=
激光重熔实验参数及相应表面粗糙度
, figureFileSmall=null, figureFileBig=null, tableContent=
| Sample | L/W | V/(mm·s-1) | f/MHz | Ra/μm |
|---|
| LPBF-NiTi | | | | 8.04 |
| #1 | 40 | 1000 | 250 | 5.38 |
| #2 | 40 | 1500 | 250 | 2.37 |
| #3 | 40 | 2000 | 250 | 1.58 |
| #4 | 40 | 1000 | 500 | 4.23 |
| #5 | 40 | 1500 | 500 | 3.18 |
| #6 | 40 | 2000 | 500 | 2.13 |
| #7 | 60 | 1000 | 250 | 4.37 |
| #8 | 60 | 1500 | 250 | 1.65 |
| #9 | 60 | 2000 | 250 | 1.38 |
| #10 | 60 | 1000 | 500 | 2.88 |
| #11 | 60 | 1500 | 500 | 2.48 |
| #12 | 60 | 2000 | 500 | 1.76 |
| #13 | 80 | 1000 | 250 | 3.64 |
| #14 | 80 | 1500 | 250 | 3.12 |
| #15 | 80 | 2000 | 250 | 1.88 |
| #16 | 80 | 1000 | 500 | 3.37 |
| #17 | 80 | 1500 | 500 | 3.08 |
| #18 | 80 | 2000 | 500 | 2.86 |
), ArticleFig(id=1322282203581633492, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, language=EN, label=Table 3, caption=
Analysis of variance for surface roughness after remelting
, figureFileSmall=null, figureFileBig=null, tableContent=
| Source of variation | Sum of squares | DF | RMSE | F-value | P-value | Significance |
|---|
| M | 18.51 | 8 | 2.31 | 14.25 | 0.0003 | Significant |
| L | 0.14 | 1 | 0.14 | 0.83 | 0.3851 | |
| V | 12.57 | 1 | 12.57 | 77.38 | <0.0001 | |
| f | 0.11 | 1 | 0.11 | 0.70 | 0.0423 | |
| LV | 0.14 | 1 | 0.14 | 0.84 | 0.0384 | |
| Vf | 1.94 | 1 | 1.94 | 12.92 | 0.0072 | |
| Lf | 1.65 | 1 | 1.65 | 10.14 | 0.0111 | |
| L2 | 1.49 | 1 | 1.49 | 9.18 | 0.0143 | |
| V2 | 0.52 | 1 | 0.52 | 3.20 | 0.0107 | |
| Residual | 1.46 | 9 | 0.16 | | | |
| Lack of fit | 1.46 | 8 | 0.18 | 228.26 | 0.0711 | Unsignificant |
), ArticleFig(id=1322282203652936661, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, language=CN, label=表3, caption=
表面粗糙度方差分析
, figureFileSmall=null, figureFileBig=null, tableContent=
| Source of variation | Sum of squares | DF | RMSE | F-value | P-value | Significance |
|---|
| M | 18.51 | 8 | 2.31 | 14.25 | 0.0003 | Significant |
| L | 0.14 | 1 | 0.14 | 0.83 | 0.3851 | |
| V | 12.57 | 1 | 12.57 | 77.38 | <0.0001 | |
| f | 0.11 | 1 | 0.11 | 0.70 | 0.0423 | |
| LV | 0.14 | 1 | 0.14 | 0.84 | 0.0384 | |
| Vf | 1.94 | 1 | 1.94 | 12.92 | 0.0072 | |
| Lf | 1.65 | 1 | 1.65 | 10.14 | 0.0111 | |
| L2 | 1.49 | 1 | 1.49 | 9.18 | 0.0143 | |
| V2 | 0.52 | 1 | 0.52 | 3.20 | 0.0107 | |
| Residual | 1.46 | 9 | 0.16 | | | |
| Lack of fit | 1.46 | 8 | 0.18 | 228.26 | 0.0711 | Unsignificant |
), ArticleFig(id=1322282203736822742, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, language=EN, label=Table 4, caption=
Response optimization constraints and solution results
, figureFileSmall=null, figureFileBig=null, tableContent=
| Response optimization | L/W | V/(mm·s-1) | f/MHz | Ra/μm |
|---|
| Goal | In range | In range | In range | Minimize |
| Lower limit | 58 | 1800 | 250 | 1.38 |
| Upper limit | 62 | 2000 | 250 | 2.88 |
| Importance | 4 | 5 | 3 | 5 |
| Solution 1 | 60.226 | 1966.417 | 250 | 1.059 (predict) |
| Solution 2 | 61.624 | 1940.621 | 250 | 1.175 (predict) |
| Solution 3 | 59.979 | 1832.658 | 250 | 1.306 (predict) |
), ArticleFig(id=1322282203816514519, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, language=CN, label=表4, caption=
响应优化约束条件及求解结果
, figureFileSmall=null, figureFileBig=null, tableContent=
| Response optimization | L/W | V/(mm·s-1) | f/MHz | Ra/μm |
|---|
| Goal | In range | In range | In range | Minimize |
| Lower limit | 58 | 1800 | 250 | 1.38 |
| Upper limit | 62 | 2000 | 250 | 2.88 |
| Importance | 4 | 5 | 3 | 5 |
| Solution 1 | 60.226 | 1966.417 | 250 | 1.059 (predict) |
| Solution 2 | 61.624 | 1940.621 | 250 | 1.175 (predict) |
| Solution 3 | 59.979 | 1832.658 | 250 | 1.306 (predict) |
), ArticleFig(id=1322282203925566424, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, language=EN, label=Table 5, caption=
Surface roughness of LPBF-NiTi after remelting treatment using response optimization results
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| Parameter combination | L/W | V/(mm·s-1) | f/MHz | Defocusing distance/mm | Spot diameter/mm | Ra/μm |
|---|
| Solution 1 | 60.2 | 1966.4 | 250 | 175 | 0.1 | 0.763 (test) |
| Solution 2 | 61.6 | 1940.6 | 1.105 (test) |
| Solution 3 | 60.0 | 1832.7 | 0.961 (test) |
), ArticleFig(id=1322282204001063897, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322282196682003325, language=CN, label=表5, caption=
使用响应优化结果重熔处理后LPBF-NiTi的表面粗糙度
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| Parameter combination | L/W | V/(mm·s-1) | f/MHz | Defocusing distance/mm | Spot diameter/mm | Ra/μm |
|---|
| Solution 1 | 60.2 | 1966.4 | 250 | 175 | 0.1 | 0.763 (test) |
| Solution 2 | 61.6 | 1940.6 | 1.105 (test) |
| Solution 3 | 60.0 | 1832.7 | 0.961 (test) |
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