Article(id=1322281962958606385, tenantId=1146029695717560320, journalId=1220038251117760515, issueId=1322281755323777794, articleNumber=null, orderNo=null, doi=10.11868/j.issn.1001-4381.2026.000301, pmid=null, cstr=32421.14.j.issn.1001-4381.2026.000301, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1778947200000, receivedDateStr=2026-05-17, revisedDate=null, revisedDateStr=null, acceptedDate=1780070400000, acceptedDateStr=2026-05-30, onlineDate=1793186186780, onlineDateStr=2026-10-28, pubDate=1787155200000, pubDateStr=2026-08-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793186186780, onlineIssueDateStr=2026-10-28, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793186186780, creator=13701087609, updateTime=1793186186780, updator=13701087609, issue=Issue{id=1322281755323777794, tenantId=1146029695717560320, journalId=1220038251117760515, year='2026', volume='54', issue='8', pageStart='1', pageEnd='358', issueExtLink='null', onlineDate='null', pubDate='1787155200000', pubDateStr='2026-08-20', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=0, createTime=1793186137276, creator='13701087609', updateTime=1793186275878, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1322282336729805035, tenantId=1146029695717560320, journalId=1220038251117760515, issueId=1322281755323777794, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1322282336729805036, tenantId=1146029695717560320, journalId=1220038251117760515, issueId=1322281755323777794, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=31, endPage=41, ext={EN=ArticleExt(id=1322281965022203954, articleId=1322281962958606385, tenantId=1146029695717560320, journalId=1220038251117760515, language=EN, title=Micro-texture formation mechanism and mechanical behavior of composite lamellar microstructure in oxygen-enriched near-α titanium alloys, columnId=null, journalTitle=Journal of Materials Engineering, columnName=null, runingTitle=null, highlight=null, articleAbstract=
To address the strength-ductility trade-off dilemma of high-oxygen powder metallurgy (PM) titanium alloys, two types of near-α titanium alloys (880-PE1 and 880-PE2) with α/βt composite lamellar microstructure and oxygen mass fraction of 0.36% are fabricated via the combination of sintering and hot extrusion process. The crystal size and morphological characteristics are analyzed by scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The crystallographic orientation features are examined through X-ray diffraction (XRD) macro-texture and electron backscatter diffraction (EBSD) micro-texture analysis. The relationships between microstructure and mechanical properties and deformation mechanisms are studied by combining room-temperature tensile tests and dislocation bright-field imaging observations. The results show that the 880-PE1 specimen exhibits no obvious micro-texture. Cracks initiate at grain boundaries of α phases during plastic deformation, resulting in a low elongation to fracture of only 8.9%. The 880-PE2 specimen develops a micro-texture with the 〈0001〉 direction of α grains aligned parallel to the extrusion direction. This unique micro-texture can effectively activate pyramidal 〈c+a〉 dislocations, which move via wavy slip and give rise to an extraordinary increase in work-hardening rate. Additionally, lamellar distortion and grain-boundary deformation compatibility are effectively promoted, and the initiation of intergranular cracks is suppressed simultaneously. Ultimate tensile strength of the 880-PE2 specimen reaches 1070 MPa,and the elongation to fracture increases to 22.0%, achieving synergistic improvement of strength–ductility.
, authors=Hairui ZHANG
1, 2, Hongzhi NIU
3, Deliang ZHANG
3, Keke ZHANG
1, Guang CHEN
1, authorsList=Hairui ZHANG, Hongzhi NIU, Deliang ZHANG, Keke ZHANG, Guang CHEN, authorCompany=null, correspAuthors=Guang CHEN, 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=1322281969992454217, articleId=1322281962958606385, tenantId=1146029695717560320, journalId=1220038251117760515, language=CN, title=富氧近α钛合金复合片层组织的微织构生成机制和力学行为, columnId=null, journalTitle=材料工程, columnName=, runingTitle=null, highlight=null, articleAbstract=
为了解决粉末冶金钛合金富氧时强塑性失衡的难题,采用烧结-热挤压工艺制备出氧含量0.36%(质量分数)的两类α/βt复合片层组织近α钛合金(880-PE1和880-PE2)。采用SEM和TEM分析晶体尺寸和形貌特征,通过XRD宏观织构和EBSD微观织构分析晶体取向信息,结合室温拉伸测试和位错明场像,研究组织与力学性能的关联及变形机制。结果表明:880-PE1无显著微织构,塑性变形时晶界α处诱发裂纹,断后伸长率仅8.9%;880-PE2形成〈0001〉α平行于挤压方向的微织构。该特殊织构可有效激活锥面〈c+a〉位错并以波滑移方式运动,引发加工硬化率异常提升,同时促进片层扭曲与晶界协调变形,抑制晶界裂纹萌生。880-PE2抗拉强度达1070 MPa,断后伸长率提升至22.0%,实现强塑性协同改善。
, authors=张海瑞
1, 2, 牛红志
3, 张德良
3, 张柯柯
1, 陈光
1, authorsList=张海瑞, 牛红志, 张德良, 张柯柯, 陈光, authorCompany=null, correspAuthors=陈光, authorNote=null, correspAuthorsNote=
陈光(1962—),男,教授,博士,研究方向为轻质耐热金属间化合物、高温合金定向凝固、非晶复合、钢铁及加工,联系地址:河南省洛阳市洛龙区开元大道263号河南科技大学博园(471023),E-mail:
gchen@njust.edu.cn, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=kW8M1yl9eFJmyHmdwRSQaA==, magXml=hyd7EmbGrUyH4Xecvxqzbw==, pdfUrl=null, pdf=IKoqGknV7JC1PJ1HusCGFA==, pdfFileSize=14487417, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=ZKb3yftxk7WGOWb8NvIAzw==, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=hkNPy9KXa1F3IbAeQ35wLQ==, mapNumber=null, fund=null)}, authors=[Author(id=1322281970520936532, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322281962958606385, 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=1322281970604822615, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322281962958606385, authorId=1322281970520936532, language=EN, stringName=Hairui ZHANG, firstName=Hairui, middleName=null, lastName=ZHANG, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
1, 2, address=
1.State Key Laboratory of Light Superalloys,Henan University of Science and Technology,Luoyang 471023,Henan,China
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1.河南科技大学 高温轻合金及应用技术全国重点实验室,河南 洛阳 471023
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3.School of Materials Science and Engineering,Northeastern University,Shenyang 110819,China, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null), CN=AuthorExt(id=1322281970915201117, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322281962958606385, authorId=1322281970772594778, language=CN, stringName=牛红志, firstName=null, middleName=null, lastName=null, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=
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3.东北大学 材料科学与工程学院,沈阳 110819, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1322281970441244752, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322281962958606385, xref=3., ext=[AuthorCompanyExt(id=1322281970449633361, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322281962958606385, companyId=1322281970441244752, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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1.河南科技大学 高温轻合金及应用技术全国重点实验室,河南 洛阳 471023, bio=null, bioImg=null, bioContent=null, aboutCorrespAuthor=null)}, companyList=[AuthorCompany(id=1322281970223140938, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322281962958606385, xref=1., ext=[AuthorCompanyExt(id=1322281970235723851, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322281962958606385, companyId=1322281970223140938, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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3.东北大学 材料科学与工程学院,沈阳 110819)])], figs=[ArticleFig(id=1322281974207729783, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322281962958606385, language=EN, label=Fig.1, caption=
Schematic diagrams of processing and heat treatments for 880-PE1(a) and 880-PE2(b), figureFileSmall=w1kuNUHQwvYTzMesPCvJMQ==, figureFileBig=ZKb3yftxk7WGOWb8NvIAzw==, tableContent=null), ArticleFig(id=1322281974291615864, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322281962958606385, language=CN, label=图1, caption=
880-PE1(a)和880-PE2(b)加工和热处理示意图, figureFileSmall=w1kuNUHQwvYTzMesPCvJMQ==, figureFileBig=ZKb3yftxk7WGOWb8NvIAzw==, tableContent=null), ArticleFig(id=1322281974488748153, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322281962958606385, language=EN, label=Fig.2, caption=
Microstructures of 880‑PE1(1) and 880‑PE2(2) (a)OM images;(b)SEM images, figureFileSmall=VO3HEt1mwUN1EXgqERbwlg==, figureFileBig=+jWRrVps+505le4ZawXBjA==, tableContent=null), ArticleFig(id=1322281974568439930, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322281962958606385, language=CN, label=图2, caption=
880‑PE1(1)和880‑PE2(2)微观组织 (a)OM图;(b)SEM图, figureFileSmall=VO3HEt1mwUN1EXgqERbwlg==, figureFileBig=+jWRrVps+505le4ZawXBjA==, tableContent=null), ArticleFig(id=1322281974652326011, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322281962958606385, language=EN, label=Fig.3, caption=
HAADF micrographs and corresponding elemental mappings of 880-PE1, figureFileSmall=83iHlKpr3MNkJPBlbskCCQ==, figureFileBig=QgvFSZ27bBs1FOCQ6LyC5A==, tableContent=null), ArticleFig(id=1322281974757183612, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322281962958606385, language=CN, label=图3, caption=
880-PE1的HAADF像及相应元素分布, figureFileSmall=83iHlKpr3MNkJPBlbskCCQ==, figureFileBig=QgvFSZ27bBs1FOCQ6LyC5A==, tableContent=null), ArticleFig(id=1322281974841069693, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322281962958606385, language=EN, label=Fig.4, caption=
Tensile properties of 880‑PE1 and 880‑PE2(a)engineering stress-strain curves;(b)true stress-strain curves and work-hardening rate curves, figureFileSmall=WSCTl8I3RG0p87lPXYVMrg==, figureFileBig=drU4zDNnxR8ymhqM3lB1Vg==, tableContent=null), ArticleFig(id=1322281974908178558, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322281962958606385, language=CN, label=图4, caption=
880‑PE1和880‑PE2的拉伸性能(a)工程应力-应变曲线;(b)真应力-真应变曲线与加工硬化率曲线
, figureFileSmall=WSCTl8I3RG0p87lPXYVMrg==, figureFileBig=drU4zDNnxR8ymhqM3lB1Vg==, tableContent=null), ArticleFig(id=1322281974992064639, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322281962958606385, language=EN, label=Fig.5, caption=
EBSD analysis results of area around cracks in 880-PE1(a),(b)SEM images;(c),(d)IPF-X maps and crystal orientation of α-Ti laths near cracks;(e),(f)SF distribution, figureFileSmall=T1ofwu9qZzUIGvBi46O9RQ==, figureFileBig=iQFhfRrloyZ/pXEOubI67g==, tableContent=null), ArticleFig(id=1322281975067562112, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322281962958606385, language=CN, label=图5, caption=
880-PE1裂纹附近EBSD分析结果(a),(b)SEM图;(c),(d)IPF-X图及裂纹附近α-Ti晶体取向;(e),(f)Schmid因子分布, figureFileSmall=T1ofwu9qZzUIGvBi46O9RQ==, figureFileBig=iQFhfRrloyZ/pXEOubI67g==, tableContent=null), ArticleFig(id=1322281975151448193, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322281962958606385, language=EN, label=Fig.6, caption=
EBSD results of area around cracks of 880-PE1(a),(b)KAM maps;(c),(d)IPF-X maps and crystal orientations around cracks, figureFileSmall=MBnvEvyHrdeK2H/+09ty/Q==, figureFileBig=nW4DYM71LXhwU86FEvpjZQ==, tableContent=null), ArticleFig(id=1322281975235334274, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322281962958606385, language=CN, label=图6, caption=
880-PE1断口附近EBSD结果(a),(b)KAM图;(c),(d)IPF-X图及裂纹附近的晶体取向, figureFileSmall=MBnvEvyHrdeK2H/+09ty/Q==, figureFileBig=nW4DYM71LXhwU86FEvpjZQ==, tableContent=null), ArticleFig(id=1322281975306637443, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322281962958606385, language=EN, label=Fig.7, caption=
Profiles of macroscopic texture along (0002) of 880-PE1 and 880-PE2, figureFileSmall=EHXzSj4ut3qGAkrb3Ej4uQ==, figureFileBig=LkHiTN2kEQiAWIA9G05yQw==, tableContent=null), ArticleFig(id=1322281975373746308, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322281962958606385, language=CN, label=图7, caption=
880-PE1和880-PE2沿(0002)晶面的宏观织构图, figureFileSmall=EHXzSj4ut3qGAkrb3Ej4uQ==, figureFileBig=LkHiTN2kEQiAWIA9G05yQw==, tableContent=null), ArticleFig(id=1322281975453438085, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322281962958606385, language=EN, label=Fig.8, caption=
Schematic diagram of mechanism of micro-texture generation, figureFileSmall=8lK2Jm86oz1AiKQ1RqTYgg==, figureFileBig=rCDmjmLuGgGJj4snVtNezw==, tableContent=null), ArticleFig(id=1322281975520546950, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322281962958606385, language=CN, label=图8, caption=
微织构生成机理示意图, figureFileSmall=8lK2Jm86oz1AiKQ1RqTYgg==, figureFileBig=rCDmjmLuGgGJj4snVtNezw==, tableContent=null), ArticleFig(id=1322281975591850119, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322281962958606385, language=EN, label=Fig.9, caption=
IPF-X maps and pole figures of 880-PE2(a)IPF-X map of α phase;(b)IPF-X map of parent β grains reconstructed according to Burgers orientation relationship;(c),(d)pole figures, figureFileSmall=+sN+J49trN8bUXWzcczuxA==, figureFileBig=odtaMU7ZnoQ3gmvfknB4Ug==, tableContent=null), ArticleFig(id=1322281975705096328, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322281962958606385, language=CN, label=图9, caption=
880-PE2的IPF-X图和极图(a)α相IPF-X图;(b)根据Burgers位向关系重构的母相β晶粒IPF-X图;(c),(d)极图, figureFileSmall=+sN+J49trN8bUXWzcczuxA==, figureFileBig=odtaMU7ZnoQ3gmvfknB4Ug==, tableContent=null), ArticleFig(id=1322281975780593801, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322281962958606385, language=EN, label=Fig.10, caption=
TEM BF dislocations micrographs of tensile samples at different strains(a)880-PE1 at 8.5% strain;(b),(c)880-PE2 at 19.5% strain, figureFileSmall=APMv9QilGF5+mJmAPKp/2A==, figureFileBig=JKCi3bns7Pzm/esa6PSh9g==, tableContent=null), ArticleFig(id=1322281975847702666, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322281962958606385, language=CN, label=图10, caption=
拉伸样品不同应变时TEM位错明场像(a)880-PE1,应变8.5%;(b),(c)880-PE2,应变19.5%, figureFileSmall=APMv9QilGF5+mJmAPKp/2A==, figureFileBig=JKCi3bns7Pzm/esa6PSh9g==, tableContent=null), ArticleFig(id=1322281975914811531, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322281962958606385, language=EN, label=Fig.11, caption=
Tensile deformation characteristics of 880-PE1(1) and 880-PE2(2)(a)fracture morphologies;(b),(c)trace analysis of longitudinal sections, figureFileSmall=R3lsZN7+5nwzYxUYXVKpzg==, figureFileBig=ultGxbRX54v9YykpthqHhQ==, tableContent=null), ArticleFig(id=1322281976007086220, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322281962958606385, language=CN, label=图11, caption=
880-PE1(1)和 880-PE2(2)拉伸变形特征(a)断口形貌;(b),(c)纵截面迹线分析, figureFileSmall=R3lsZN7+5nwzYxUYXVKpzg==, figureFileBig=ultGxbRX54v9YykpthqHhQ==, tableContent=null), ArticleFig(id=1322281976074195085, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322281962958606385, language=EN, label=Table 1, caption=
Phase content and grain size of 880‑PE1 and 880‑PE2
, figureFileSmall=null, figureFileBig=null, tableContent=
| Sample | Volume fraction of α/% | Volume fraction of βt/% | Grain size/μm | Mean width of α laths/μm | Mean width of αGB/μm |
|---|
| 880-PE1 | 78.8 | 21.2 | 125 | 0.90 | 2.31 |
| 880-PE2 | 77.2 | 22.8 | 78 | 0.90 | 2.08 |
), ArticleFig(id=1322281976145498254, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322281962958606385, language=CN, label=表1, caption=
880‑PE1和880‑PE2的相含量和尺寸
, figureFileSmall=null, figureFileBig=null, tableContent=
| Sample | Volume fraction of α/% | Volume fraction of βt/% | Grain size/μm | Mean width of α laths/μm | Mean width of αGB/μm |
|---|
| 880-PE1 | 78.8 | 21.2 | 125 | 0.90 | 2.31 |
| 880-PE2 | 77.2 | 22.8 | 78 | 0.90 | 2.08 |
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