Article(id=1321967798998385220, tenantId=1146029695717560320, journalId=1220038251117760515, issueId=1321967675631317438, articleNumber=null, orderNo=null, doi=10.11868/j.issn.1001-4381.2025.000719, pmid=null, cstr=32421.14.j.issn.1001-4381.2025.000719, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1765209600000, receivedDateStr=2025-12-09, revisedDate=null, revisedDateStr=null, acceptedDate=1767542400000, acceptedDateStr=2026-01-05, onlineDate=1793111284254, onlineDateStr=2026-10-27, pubDate=1779206400000, pubDateStr=2026-05-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793111284254, onlineIssueDateStr=2026-10-27, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793111284254, creator=13701087609, updateTime=1793111284254, updator=13701087609, issue=Issue{id=1321967675631317438, tenantId=1146029695717560320, journalId=1220038251117760515, year='2026', volume='54', issue='5', pageStart='1', pageEnd='271', issueExtLink='null', onlineDate='null', pubDate='1779206400000', pubDateStr='2026-05-20', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=0, createTime=1793111254842, creator='13701087609', updateTime=1793111405793, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1321968309042532665, tenantId=1146029695717560320, journalId=1220038251117760515, issueId=1321967675631317438, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1321968309042532666, tenantId=1146029695717560320, journalId=1220038251117760515, issueId=1321967675631317438, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=221, endPage=232, ext={EN=ArticleExt(id=1321967799224877637, articleId=1321967798998385220, tenantId=1146029695717560320, journalId=1220038251117760515, language=EN, title=Optimization of process parameters for laser powder bed fusion of K439B superalloy, columnId=1220689384450478826, journalTitle=Journal of Materials Engineering, columnName=RESEARCH ARTICLE, runingTitle=null, highlight=null, articleAbstract=
K439B nickel-based alloy is a novel high-temperature material capable of operating at 800 ℃, which has been widely used in critical components such as combustion chamber housings for aerospace engines. However, the traditional casting process struggles to meet the high qualification rate requirement for high-precision forming of thin-walled complex components. In this study, laser powder bed fusion (LPBF) technology is used to process samples. By adjusting the laser power (140-220 W) and scanning speed (600-1400 mm/s), and using characterization techniques including optical microscopy, scanning electron microscopy, and electron backscatter diffraction, the effects of process parameters of LPBF on the relative density and microstructure are analyzed. The processing window (laser power:160-220 W, scanning speed:1000-1200 mm/s) for manufacturing K439B superalloy via LPBF is summarized, and two process parameters (160 W-1000 mm/s and 220 W-1200 mm/s) within the window are selected to process samples for tensile tests at room-temperature and 800 ℃. The results show that irregular pores and Ti-C carbides are prone to form under the 160 W-1000 mm/s (volume energy density(VED) = 66.67 J/mm³) parameter. In contrast, the samples processed under 220 W-1200 mm/s (VED = 114.58 J/mm³) have a uniform microstructure without carbide, whose ultimate tensile strength at room temperature is over 1 GPa and elongation is over 25%. However, at 800 ℃, all LPBF samples exhibit brittleness (with an elongation after fracture of approximately 0.5%), which is mainly attributed to the lack of γ' phases and dissolution of cellular substructures inside the grains.This study provides process guidance and theoretical support for the engineering application of LPBF fabricated K439B alloy.
, authors=Jialong SONG
1, Dafan DU
1, Anping DONG
1, 2, Qing LI
3, Yulong CHEN
4, Qiaomu LIU
4, Chengbo XIAO
3, Baode SUN
1, 2, authorsList=Jialong SONG, Dafan DU, Anping DONG, Qing LI, Yulong CHEN, Qiaomu LIU, Chengbo XIAO, Baode SUN, authorCompany=null, correspAuthors=Dafan DU, Anping DONG, 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=1321967800814518870, articleId=1321967798998385220, tenantId=1146029695717560320, journalId=1220038251117760515, language=CN, title=K439B高温合金激光粉末床熔融工艺参数优化, columnId=1220689384622445292, journalTitle=材料工程, columnName=研究论文, runingTitle=null, highlight=null, articleAbstract=
K439B镍基合金是一种服役温度达800 ℃的新型高温材料,已广泛用于航空发动机燃烧室壳体等关键部件,但目前铸造工艺难以满足薄壁复杂构件高精度成型的高合格率需求。本研究采用激光粉末床熔融(laser powder bed fusion,LPBF)技术,通过调整激光功率(140~220 W)与扫描速率(600~1400 mm/s),采用光学显微镜、扫描电镜、电子背散射衍射等表征技术,分析工艺参数对构件致密度和微观组织的影响。总结得到了LPBF技术制造K439B高温合金的工艺窗口(激光功率:160~220 W,扫描速率:1000~1200 mm/s),在窗口内选择2个参数(160 W-1000 mm/s和220 W-1200 mm/s)加工样品并开展室温和800 ℃高温拉伸实验。结果表明,160 W-1000 mm/s(体积能量密度VED=66.67 J/mm³)工艺参数制备的样品组织中出现不规则孔隙与Ti-C碳化物,而220 W-1200 mm/s(VED=114.58 J/mm³)成型样品组织均匀无碳化物,且室温抗拉强度超过1 GPa,断后伸长率达到25%。但在800 ℃环境下,所有LPBF构件均表现出脆性(断后伸长率约0.5%),主要因为LPBF过程中快速冷却条件导致γ′强化相缺失及晶粒内部的胞状亚结构发生完全消解。本研究为K439B合金LPBF成型的工程应用提供工艺依据与理论支撑。
, authors=宋嘉龙
1, 杜大帆
1, 董安平
1, 2, 李青
3, 陈玉龙
4, 刘巧沐
4, 肖程波
3, 孙宝德
1, 2, authorsList=宋嘉龙, 杜大帆, 董安平, 李青, 陈玉龙, 刘巧沐, 肖程波, 孙宝德, authorCompany=null, correspAuthors=杜大帆, 董安平, authorNote=null, correspAuthorsNote=
杜大帆(1987—),男,副教授,博士,研究方向为高温合金精密铸造和增材制造,联系地址:上海市东川路800号上海交通大学材料B楼411(200240),E-mail:
dafand@sjtu.edu.cn董安平(1977—),男,特聘教授,博士,研究方向为高温合金精密铸造和增材制造,联系地址:上海市东川路800号上海交通大学材料A楼305A(200240),E-mail:
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1.上海交通大学 上海市先进高温材料及其精密成形重点实验室,上海 200240)])]), Author(id=1321967804039938670, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1321967798998385220, orderNo=2, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=apdong@sjtu.edu.cn, emailSecond=null, emailThird=null, correspondingAuthor=1, authorType=1, ext={EN=AuthorExt(id=1321967804132213361, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1321967798998385220, authorId=1321967804039938670, language=EN, stringName=Anping DONG, firstName=Anping, middleName=null, lastName=DONG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, 2, address=
1.Shanghai Key Lab of Advanced High-temperature Materials and Precision Forming,Shanghai Jiao Tong University,Shanghai 200240,China
2.State Key Lab of Metal Matrix Composites,Shanghai Jiao Tong University,Shanghai 200240,China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1321967804203516530, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1321967798998385220, authorId=1321967804039938670, language=CN, stringName=董安平, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, 2, address=
1.上海交通大学 上海市先进高温材料及其精密成形重点实验室,上海 200240
2.上海交通大学;金属基复合材料国家重点实验室,上海 200240, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1321967801091342935, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1321967798998385220, xref=1., ext=[AuthorCompanyExt(id=1321967801099731544, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1321967798998385220, companyId=1321967801091342935, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1.Shanghai Key Lab of Advanced High-temperature Materials and Precision Forming,Shanghai Jiao Tong University,Shanghai 200240,China), AuthorCompanyExt(id=1321967801112314457, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1321967798998385220, companyId=1321967801091342935, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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3, address=
3.中国航发北京航空材料研究院 先进高温结构;材料重点实验室,北京 100095, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1321967803045888605, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1321967798998385220, xref=3., ext=[AuthorCompanyExt(id=1321967803079443038, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1321967798998385220, companyId=1321967803045888605, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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4, address=
4.中国航发四川燃气涡轮研究院 先进动力总体部,成都 610500, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1321967803163329120, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1321967798998385220, xref=4., ext=[AuthorCompanyExt(id=1321967803175912033, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1321967798998385220, companyId=1321967803163329120, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
4.Advanced Power General Department,AECC Sichuan Gas Turbine Establishment,Chengdu 610500,China), AuthorCompanyExt(id=1321967803184300642, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1321967798998385220, companyId=1321967803163329120, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
4.中国航发四川燃气涡轮研究院 先进动力总体部,成都 610500)])]), Author(id=1321967805033988739, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1321967798998385220, orderNo=6, 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=1321967805113680517, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1321967798998385220, authorId=1321967805033988739, language=EN, stringName=Chengbo XIAO, firstName=Chengbo, middleName=null, lastName=XIAO, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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3.Science and Technology on Advanced High Temperature Structural Materials Laboratory,AECC Beijing Institute of Aeronautical Materials,Beijing 100095,China), AuthorCompanyExt(id=1321967803100414559, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1321967798998385220, companyId=1321967803045888605, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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1.Shanghai Key Lab of Advanced High-temperature Materials and Precision Forming,Shanghai Jiao Tong University,Shanghai 200240,China), AuthorCompanyExt(id=1321967801112314457, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1321967798998385220, companyId=1321967801091342935, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
1.上海交通大学 上海市先进高温材料及其精密成形重点实验室,上海 200240)]), AuthorCompany(id=1321967801351389786, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1321967798998385220, xref=2., ext=[AuthorCompanyExt(id=1321967801363972699, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1321967798998385220, companyId=1321967801351389786, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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2.State Key Lab of Metal Matrix Composites,Shanghai Jiao Tong University,Shanghai 200240,China), AuthorCompanyExt(id=1321967801372361308, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1321967798998385220, companyId=1321967801351389786, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
2.上海交通大学;金属基复合材料国家重点实验室,上海 200240)]), AuthorCompany(id=1321967803045888605, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1321967798998385220, xref=3., ext=[AuthorCompanyExt(id=1321967803079443038, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1321967798998385220, companyId=1321967803045888605, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
3.Science and Technology on Advanced High Temperature Structural Materials Laboratory,AECC Beijing Institute of Aeronautical Materials,Beijing 100095,China), AuthorCompanyExt(id=1321967803100414559, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1321967798998385220, companyId=1321967803045888605, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
3.中国航发北京航空材料研究院 先进高温结构;材料重点实验室,北京 100095)]), AuthorCompany(id=1321967803163329120, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1321967798998385220, xref=4., ext=[AuthorCompanyExt(id=1321967803175912033, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1321967798998385220, companyId=1321967803163329120, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
4.Advanced Power General Department,AECC Sichuan Gas Turbine Establishment,Chengdu 610500,China), AuthorCompanyExt(id=1321967803184300642, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1321967798998385220, companyId=1321967803163329120, language=CN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
4.中国航发四川燃气涡轮研究院 先进动力总体部,成都 610500)])], figs=[ArticleFig(id=1321967808016138903, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1321967798998385220, language=EN, label=Fig.1, caption=
Schematic diagram of process and tested specimens(a)LPBF process;(b)laser scan strategy;(c)bulk samples formed via different process parameters;
(d)fabricated samples with different thicknesses
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工艺及测试样品示意图(a)LPBF工艺;(b)激光扫描策略;(c)不同工艺参数成型的块状样品;(d)2种厚度的制备样品
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Effect of processing parameters on microstructure(a)OM images of polished samples with different process parameters;(b)influence of VED on porosity;(c)relative density heat map
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工艺参数对组织的影响(a)不同参数加工样品磨抛后的光学显微镜结果;(b)VED值对孔隙率的影响;(c)致密度热力图
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OM microstructures of K439B alloys with different printing parameters and thicknesses(a)160 W-1000 mm/s,1 mm;(b)160 W-1000 mm/s,2 mm;(c)220 W-1200 mm/s,1 mm;(d)220 W-1200 mm/s,2 mm
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不同打印参数和厚度K439B合金样品的金相组织(a)160 W-1000 mm/s,1 mm;(b)160 W-1000 mm/s,2 mm;(c)220 W-1200 mm/s,1 mm;(d)220 W-1200 mm/s,2 mm
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SEM microstructures of K439B alloys with different printing parameters and thicknesses(a)160 W-1000 mm/s,1 mm;(b)160 W-1000 mm/s,2 mm;(c)220 W-1200 mm/s,1 mm;(d)220 W-1200 mm/s,2 mm
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不同打印参数和厚度K439B合金样品SEM组织(a)160 W-1000 mm/s,1 mm;(b)160 W-1000 mm/s,2 mm;(c)220 W-1200 mm/s,1 mm;(d)220 W-1200 mm/s,2 mm
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EBSD results of K439B alloys with different printing parameters and thicknesses(a)160 W-1000 mm/s,1 mm;(b)160 W-1000 mm/s,2 mm;(c)220 W-1200 mm/s,1 mm;(d)220 W-1200 mm/s,2 mm
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不同打印参数和厚度K439B合金样品EBSD结果(a)160 W-1000 mm/s,1 mm;(b)160 W-1000 mm/s,2 mm;(c)220 W-1200 mm/s,1 mm;(d)220 W-1200 mm/s,2 mm
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Engineering stress-strain curves of K439B alloys with different printing parameters and thicknesses at different temperatures(a)room temperature[12];(b)800 ℃[38]
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不同温度下不同的打印参数和厚度K439B合金样品工程应力-应变曲线(a)室温[12];(b)800 ℃[38]
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OM microstructures of fracture with different printing parameters and thicknesses, figureFileSmall=0R/FE4kucTXtzU1xGe2ecQ==, figureFileBig=lytUb7aRwRyn/kiYbAsxKg==, tableContent=null), ArticleFig(id=1321967809031160484, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1321967798998385220, language=CN, label=图7, caption=
不同打印参数和厚度K439B合金样品断口处金相组织, figureFileSmall=0R/FE4kucTXtzU1xGe2ecQ==, figureFileBig=lytUb7aRwRyn/kiYbAsxKg==, tableContent=null), ArticleFig(id=1321967809140212389, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1321967798998385220, language=EN, label=Fig8, caption=
SEM microstructure of fracture with different printing parameters and thicknesses, figureFileSmall=aUT/A4FCi/U0cTRoxeYDsw==, figureFileBig=cWvfMNFBE7K0jhX9k2odWA==, tableContent=null), ArticleFig(id=1321967809219904166, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1321967798998385220, language=CN, label=图8, caption=
不同打印参数和厚度K439B合金样品断口处SEM微观组织, figureFileSmall=aUT/A4FCi/U0cTRoxeYDsw==, figureFileBig=cWvfMNFBE7K0jhX9k2odWA==, tableContent=null), ArticleFig(id=1321967809291207335, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1321967798998385220, language=EN, label=Table 1, caption=
Chemical compositions of K439B alloy(mass fraction/%)
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| Cr | Co | Ti | Al | Ta | Nb | Si | C | W | Mn | Zr | Ni |
|---|
| 22.22 | 18.84 | 3.76 | 1.91 | 1.58 | 0.99 | 0.05 | 0.01 | 2.15 | 0.01 | 0.01 | Bal. |
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K439B合金化学成分(质量分数/%)
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| Cr | Co | Ti | Al | Ta | Nb | Si | C | W | Mn | Zr | Ni |
|---|
| 22.22 | 18.84 | 3.76 | 1.91 | 1.58 | 0.99 | 0.05 | 0.01 | 2.15 | 0.01 | 0.01 | Bal. |
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Process parameters of LPBF
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| Laser power/W | Scan speed/(mm·s-1) | VED/(J·mm-3) |
|---|
| 140 | 600,800,1000,1200,1400 | 97.22,72.92,58.33,48.61,41.67 |
| 160 | 600,800,1000,1200,1400 | 111.11,83.33,66.67,55.56,47.62 |
| 180 | 600,800,1000,1200,1400 | 125.00,93.75,75.00,62.50,53.57 |
| 200 | 600,800,1000,1200,1400 | 138.89,104.17,83.33,69.44,59.52 |
| 220 | 600,800,1000,1200,1400 | 152.78,114.58,91.67,76.39,65.48 |
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LPBF工艺参数
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| Laser power/W | Scan speed/(mm·s-1) | VED/(J·mm-3) |
|---|
| 140 | 600,800,1000,1200,1400 | 97.22,72.92,58.33,48.61,41.67 |
| 160 | 600,800,1000,1200,1400 | 111.11,83.33,66.67,55.56,47.62 |
| 180 | 600,800,1000,1200,1400 | 125.00,93.75,75.00,62.50,53.57 |
| 200 | 600,800,1000,1200,1400 | 138.89,104.17,83.33,69.44,59.52 |
| 220 | 600,800,1000,1200,1400 | 152.78,114.58,91.67,76.39,65.48 |
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Results of grain boundaries from EBSD
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| Process parameter | High angle grain boundary/% | Low angle grain boundary/% |
|---|
| 160 W-1000 mm/s, 1 mm | 80.7 | 19.3 |
| 160 W-1000 mm/s, 2 mm | 78.3 | 21.7 |
| 220 W-1200 mm/s, 1 mm | 68.4 | 31.6 |
| 220 W-1200 mm/s, 2 mm | 65.2 | 37.5 |
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EBSD实验晶界的统计结果
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| Process parameter | High angle grain boundary/% | Low angle grain boundary/% |
|---|
| 160 W-1000 mm/s, 1 mm | 80.7 | 19.3 |
| 160 W-1000 mm/s, 2 mm | 78.3 | 21.7 |
| 220 W-1200 mm/s, 1 mm | 68.4 | 31.6 |
| 220 W-1200 mm/s, 2 mm | 65.2 | 37.5 |
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