Article(id=1322281799271690759, tenantId=1146029695717560320, journalId=1220038251117760515, issueId=1322281755323777794, articleNumber=null, orderNo=null, doi=10.11868/j.issn.1001-4381.2026.000126, pmid=null, cstr=32421.14.j.issn.1001-4381.2026.000126, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1772640000000, receivedDateStr=2026-03-05, revisedDate=null, revisedDateStr=null, acceptedDate=1779120000000, acceptedDateStr=2026-05-19, onlineDate=1793186147754, onlineDateStr=2026-10-28, pubDate=1787155200000, pubDateStr=2026-08-20, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793186147754, onlineIssueDateStr=2026-10-28, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793186147754, creator=13701087609, updateTime=1793186147754, 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=180, endPage=196, ext={EN=ArticleExt(id=1322281799657566729, articleId=1322281799271690759, tenantId=1146029695717560320, journalId=1220038251117760515, language=EN, title=TiAl alloys: progress, properties, and challenges, columnId=null, journalTitle=Journal of Materials Engineering, columnName=null, runingTitle=null, highlight=null, articleAbstract=
TiAl alloys have become key materials for weight reduction and performance enhancement in aero-engines due to their low density, excellent high-temperature strength, and oxidation resistance. However, their room-temperature brittleness and low damage tolerance have long constrained their engineering applications. This paper systematically reviews the development history of TiAl alloys since the 1970s, covering the evolution of material characteristics, major scientific research programs, and progress in engineering applications. Through successive fundamental research projects, the United States and Europe have systematically addressed critical scientific issues such as casting processes, microstructural control, and property evaluation, laying the foundation for the application of GEnx engine blades. Since the 12th Five-Year Plan period, through systematic development under national science and technology programs such as the National Basic Research Program and the National Key Research and Development Program, China has overcome key technological bottlenecks, including the independent development of high-Nb alloy systems and the near-net shaping of full-scale blades, thereby establishing a complete full-chain technological system. Although TiAl alloy design has now evolved to the third generation, achieving fine-grained microstructures and compatibility with conventional forging, persistent challenges include low room-temperature ductility, high sensitivity of fatigue life to micro-defects and stress concentrations, high fatigue crack growth rate, and high creep elastic elongation. Furthermore, this paper identifies a series of critical challenges facing TiAl alloys from the perspectives of manufacturing processes and engineering service. Addressing these issues will lay the foundation for the reliable application of TiAl alloys in high thrust-to-weight ratio aero-engines.
, authors=Hailiang JIN
1, Shaohua LIU
2, 3, Wei LI
1, Chunling ZHAO
1, Zhilai CHEN
1, Xiankun JI
1, Chao ZHANG
2, authorsList=Hailiang JIN, Shaohua LIU, Wei LI, Chunling ZHAO, Zhilai CHEN, Xiankun JI, Chao ZHANG, authorCompany=null, correspAuthors=Shaohua LIU, Chunling ZHAO, 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=1322281804971749916, articleId=1322281799271690759, tenantId=1146029695717560320, journalId=1220038251117760515, language=CN, title=TiAl合金的发展、特性与挑战, columnId=null, journalTitle=材料工程, columnName=, runingTitle=null, highlight=null, articleAbstract=
TiAl合金因其低密度、优异的高温强度与抗氧化性,成为航空发动机减重增效的关键材料,但室温脆性与低损伤容限长期制约其工程应用。本文系统梳理了TiAl合金自1970年代至今的发展历程,涵盖材料特性演变、重大科研项目及工程化应用进展。美欧先后通过基础科学研究,系统解决了铸造工艺、组织调控与性能评估等关键科学问题,为GEnx发动机低压涡轮TiAl叶片应用奠定基础。自“十二五”以来,我国依托973计划、国家重点研发计划等重大科研项目的系统布局,突破了高Nb合金体系自主开发、全尺寸叶片近净成形制备等关键技术瓶颈,构建了完整的全链条技术体系。目前,TiAl合金设计虽已发展到第三代,实现了细晶组织和常规设备锻造,但依然存在室温延性低、疲劳寿命对缺陷与应力集中高度敏感、疲劳裂纹扩展速率高、蠕变弹性伸长率高等不利因素。本文从制备工艺和工程服役两个维度提出了TiAl合金面临的关键挑战,上述问题的解决将为实现TiAl合金在高推重比发动机中的可靠应用奠定基础。
, authors=金海良
1, 刘少华
2, 3, 李维
1, 赵春玲
1, 陈芝来
1, 季显坤
1, 张超
2, authorsList=金海良, 刘少华, 李维, 赵春玲, 陈芝来, 季显坤, 张超, authorCompany=null, correspAuthors=刘少华, 赵春玲, authorNote=null, correspAuthorsNote=
刘少华(1990—),男,助理教授,博士,研究方向:航空发动机用新材料适航验证技术研究,联系地址:陕西省西安市友谊西路127号西北工业大学民航学院(710072),E-mail:
liush@nwpu.edu.cn赵春玲(1982—),女,研究员,博士,研究方向:航空发动机用新材料、新工艺应用研究,联系地址:湖南省株洲市芦淞区董家塅湖南动力机械研究所(412002),E-mail:
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2.西北工业大学 民航学院,西安 710072)]), AuthorCompany(id=1322281805659615779, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322281799271690759, xref=3., ext=[AuthorCompanyExt(id=1322281805668004388, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322281799271690759, companyId=1322281805659615779, language=EN, country=null, province=null, city=null, postcode=null, companyName=null, departmentName=null, remark=
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Evolution of temperature capability for TiAl alloys, figureFileSmall=rXgk+cH0Fj5kZlCynxefUw==, figureFileBig=l7oBdBU+6keqgCVUGP2CyA==, tableContent=null), ArticleFig(id=1322281809979748950, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322281799271690759, language=CN, label=图1, caption=
TiAl合金承温能力的发展, figureFileSmall=rXgk+cH0Fj5kZlCynxefUw==, figureFileBig=l7oBdBU+6keqgCVUGP2CyA==, tableContent=null), ArticleFig(id=1322281810160104023, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322281799271690759, language=EN, label=Fig.2, caption=
Investigation into casting processes of γ-TiAl alloys in the EU IMPRESS project[11](a)casting processes (centrifugal,tilt,counter-gravity) for industrial production of γ-TiAl turbine blades;(b)TEMPUS electromagnetic levitation casting;(c)ProCAST mold flow simulation results for the tilt casting process of turbine blades;(d)3D phase-field simulation of polycrystalline dendritic solidification, figureFileSmall=qrXhxK0ryhvtjYhUyi90HA==, figureFileBig=Huo/Qm2etO01xpRpLBdntQ==, tableContent=null), ArticleFig(id=1322281811833631320, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322281799271690759, language=CN, label=图2, caption=
欧盟IMPRESS项目γ-TiAl合金铸造工艺研究[11](a)用于工业生产的γ-TiAl涡轮叶片铸造工艺(离心、倾斜、反重力);(b)TEMPUS电磁悬浮铸造;(c)涡轮叶片倾斜铸造工艺的ProCAST模流分析结果;(d)多晶枝晶凝固的三维相场模拟
, figureFileSmall=qrXhxK0ryhvtjYhUyi90HA==, figureFileBig=Huo/Qm2etO01xpRpLBdntQ==, tableContent=null), ArticleFig(id=1322281812232090201, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322281799271690759, language=EN, label=Fig.3, caption=
Tensile properties of TiAl alloys at room temperature[7,24,44,50-57], figureFileSmall=FlnrKsd2JilZOZ/i1Ds4Fw==, figureFileBig=NrjGQ3a1cd6uhB54r3iIlg==, tableContent=null), ArticleFig(id=1322281812336947802, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322281799271690759, language=CN, label=图3, caption=
TiAl合金室温拉伸性能[7,24,44,50-57], figureFileSmall=FlnrKsd2JilZOZ/i1Ds4Fw==, figureFileBig=NrjGQ3a1cd6uhB54r3iIlg==, tableContent=null), ArticleFig(id=1322281812697657947, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322281799271690759, language=EN, label=Fig.4, caption=
S-N data for various alloys under different conditions[62],the data are from literatures[7,62-65], figureFileSmall=i0NxH1DcJH2NkIJHRWAzNQ==, figureFileBig=GGvddafSewt8aScmjkPuTA==, tableContent=null), ArticleFig(id=1322281813049979484, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322281799271690759, language=CN, label=图4, caption=
不同合金在不同条件下的S-N数据[62],引用文献数据[7,62-65], figureFileSmall=i0NxH1DcJH2NkIJHRWAzNQ==, figureFileBig=GGvddafSewt8aScmjkPuTA==, tableContent=null), ArticleFig(id=1322281813142254173, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322281799271690759, language=EN, label=Fig.5, caption=
Creep properties of ZTNM TiAl alloy at 700 ℃[57,80-85](a)creep life curves;(b)Larson-Miller plot corresponding to 1% plastic strain,a denotes the
Larson-Miller curve corresponding to the creep rupture data
, figureFileSmall=pEkgkEjPd9gMNoR2zisS9w==, figureFileBig=HHQF4+GxQOO1M95Ee9L/rg==, tableContent=null), ArticleFig(id=1322281813221945950, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322281799271690759, language=CN, label=图5, caption=
ZTNM合金在700 ℃蠕变性能[57,80-85](a)蠕变寿命曲线;(b)塑性应变1%对应的Larson-Miller曲线,a表示蠕变断裂后对应的Larson-Miller曲线
, figureFileSmall=pEkgkEjPd9gMNoR2zisS9w==, figureFileBig=HHQF4+GxQOO1M95Ee9L/rg==, tableContent=null), ArticleFig(id=1322281813293249119, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322281799271690759, language=EN, label=Fig.6, caption=
Oxidation kinetics curves of TiAl alloys[86-87], figureFileSmall=HjGiFQWaf9bJb4zSG/+cww==, figureFileBig=uyXjADzhwBOiOEEx1iq7QQ==, tableContent=null), ArticleFig(id=1322281813372940896, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322281799271690759, language=CN, label=图6, caption=
TiAl合金氧化动力学曲线[86-87], figureFileSmall=HjGiFQWaf9bJb4zSG/+cww==, figureFileBig=uyXjADzhwBOiOEEx1iq7QQ==, tableContent=null), ArticleFig(id=1322281813435855457, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322281799271690759, language=EN, label=Fig.7, caption=
Fatigue fracture morphology of TiAl alloy specimen at 700 ℃(a)macroscopic fracture morphology;(b)fatigue source;(c)enlarged view of the fatigue source
, figureFileSmall=MutGTqvEeAUTGKPg2A7igg==, figureFileBig=3IOwRLCHyVbtFCt6gzurEg==, tableContent=null), ArticleFig(id=1322281813507158626, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322281799271690759, language=CN, label=图7, caption=
TiAl合金测试件700 ℃疲劳断口形貌(a)宏观断口形貌;(b)疲劳源;(c)疲劳源放大图
, figureFileSmall=MutGTqvEeAUTGKPg2A7igg==, figureFileBig=3IOwRLCHyVbtFCt6gzurEg==, tableContent=null), ArticleFig(id=1322281813582656099, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322281799271690759, language=EN, label=Fig.8, caption=
Results of the IndiGo aviation engine incident investigation[102](a)airbus A320 PW1100G-JM engine;(b)burned-through perforation (1.0 cm×1.8 cm) in the combustion case and floating wall liner segments,indicating missing bolts;(c)impact damage to the 2nd-stage high-pressure turbine blade;(d)fracture of the 3rd-stage low-pressure turbine blade
, figureFileSmall=NoVxaqJs6vQ43aZMv6rtCw==, figureFileBig=vaSY+veIiabXvleQzEuvPQ==, tableContent=null), ArticleFig(id=1322281813704290916, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322281799271690759, language=CN, label=图8, caption=
IndiGo航空发动机事故症候调查结果[102](a)空客A320 PW1100G-JM发动机;(b)燃烧室衬套和浮动壁衬套段存在烧穿孔洞(1.0 cm×1.8 cm),显示螺栓缺失;
(c)2级高压涡轮叶片冲击损伤;(d)3级低压涡轮叶片断裂
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Chemical compositions of the TiAl alloys investigated in the AITP project(atom fraction/%,the same below)
, figureFileSmall=null, figureFileBig=null, tableContent=
| Alloy | Ti | A1 | Cr | Nb | W | Ta | Si | C | O | B |
|---|
| Cast-to-size Ti-48-2-2 | 48.4 | 47.5 | 1.87 | 1.97 | | | | 0.019 | 0.212 | |
| GEAE Ti-47-2-2 | 48.7 | 47.1 | 1.91 | 2.02 | | | | 0.045 | 0.167 | |
| CMU Ti-47-2-2 | 49.4 | 46.5 | 2.00 | 1.90 | | | | | 0.192 | |
| Howmet Ti-47-2-2 | 49.7 | 46.4 | 1.82 | 1.82 | | | | | 0.176 | |
| Cast-to-size ABB-2 | 50.6 | 46.5 | | | 2.28 | | 0.48 | | 0.085 | |
| ABB-23 | 50.6 | 46.0 | | | 1.99 | | 0.48 | 0.017 | 0.122 | 0.65 |
| NCG359E | 48.7 | 46.8 | 1.64 | 0.68 | | 1.73 | | 0.030 | 0.211 | |
| 95A | 48.0 | 47.0 | 2.00 | 2.50 | 0.2 | | | | 0.170 | 0.12 |
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AITP项目所用TiAl合金的化学成分(原子分数/%,下同)
, figureFileSmall=null, figureFileBig=null, tableContent=
| Alloy | Ti | A1 | Cr | Nb | W | Ta | Si | C | O | B |
|---|
| Cast-to-size Ti-48-2-2 | 48.4 | 47.5 | 1.87 | 1.97 | | | | 0.019 | 0.212 | |
| GEAE Ti-47-2-2 | 48.7 | 47.1 | 1.91 | 2.02 | | | | 0.045 | 0.167 | |
| CMU Ti-47-2-2 | 49.4 | 46.5 | 2.00 | 1.90 | | | | | 0.192 | |
| Howmet Ti-47-2-2 | 49.7 | 46.4 | 1.82 | 1.82 | | | | | 0.176 | |
| Cast-to-size ABB-2 | 50.6 | 46.5 | | | 2.28 | | 0.48 | | 0.085 | |
| ABB-23 | 50.6 | 46.0 | | | 1.99 | | 0.48 | 0.017 | 0.122 | 0.65 |
| NCG359E | 48.7 | 46.8 | 1.64 | 0.68 | | 1.73 | | 0.030 | 0.211 | |
| 95A | 48.0 | 47.0 | 2.00 | 2.50 | 0.2 | | | | 0.170 | 0.12 |
), ArticleFig(id=1322281813934977639, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322281799271690759, language=EN, label=Table 2, caption=
Evolution of polycrystalline TiAl alloys
, figureFileSmall=null, figureFileBig=null, tableContent=
| TiAl alloy generation | Characteristic | Nominal composition | Typical processing | Country |
|---|
| Gen 1 | High Al (≈48%), simple alloying, coarse as-cast microstructure, inherently poor room-temperature ductility | Ti-48Al-1V-0.1%(mass fraction)C[15] | Casting/forging | USA |
| Ti-48Al-2Nb-1W[1] | Casting | USA |
| Gen 2 | Medium Al (45%-48%), multi-component microalloying, peritectic solidification | Ti-(47,48)Al-2Nb-2(Cr,Mn) e.g., 4822[17,32] or 4722[7] | Casting | USA |
| Ti-47Al-2Cr-2Nb-0.2W-B[33] | Casting | USA |
| Ti-48Al-2Nb-2Cr[34] | Powder metallurgy | USA |
Ti-(45,47)Al-2Cr-2Nb-2Mn-0.8%TiB2 e.g.,45XD[19-20] | Casting | USA |
| Ti-47Al-2W-0.5Si(47WSi or ABB-2)[7,20,35-36] | Casting | USA |
| Gen 3 | Low Al (42%-45%) with high Nb/Mo additions, β-solidification pathway imparts good hot workability, enabling forging | Ti-(40-45)Al-(2-8)Nb-(1-8)(Cr,Mn,V,Mo)- (0-0.5)(B,C)[37] | Forging | USA |
| Ti-46.2Al-2Cr-3Nb-0.2W-0.2C-0.2B-0.15Si(K5)[38-39] | Forging | USA |
Ti-(42-44)Al-(3-5)Nb-(0.1-2)Mo-(0.1-1.0)B e.g., TNM[40-41] | Forging | Austria |
Ti-(40-45)Al-(5-10)Nb-(B,C) e.g.,TNB-V5[42] | Forging | Germany |
| Ti-43Al-4Nb-1Mo-0.5B[43] | Casting | China |
Medium Al (≥46%) with high Nb addition, superior high-temperature oxidation resistance and creep capability | Ti-46Al-5Nb-0.1C[44] | Casting | China |
), ArticleFig(id=1322281814035640936, tenantId=1146029695717560320, journalId=1220038251117760515, articleId=1322281799271690759, language=CN, label=表2, caption=
多晶TiAl合金的发展
, figureFileSmall=null, figureFileBig=null, tableContent=
| TiAl alloy generation | Characteristic | Nominal composition | Typical processing | Country |
|---|
| Gen 1 | High Al (≈48%), simple alloying, coarse as-cast microstructure, inherently poor room-temperature ductility | Ti-48Al-1V-0.1%(mass fraction)C[15] | Casting/forging | USA |
| Ti-48Al-2Nb-1W[1] | Casting | USA |
| Gen 2 | Medium Al (45%-48%), multi-component microalloying, peritectic solidification | Ti-(47,48)Al-2Nb-2(Cr,Mn) e.g., 4822[17,32] or 4722[7] | Casting | USA |
| Ti-47Al-2Cr-2Nb-0.2W-B[33] | Casting | USA |
| Ti-48Al-2Nb-2Cr[34] | Powder metallurgy | USA |
Ti-(45,47)Al-2Cr-2Nb-2Mn-0.8%TiB2 e.g.,45XD[19-20] | Casting | USA |
| Ti-47Al-2W-0.5Si(47WSi or ABB-2)[7,20,35-36] | Casting | USA |
| Gen 3 | Low Al (42%-45%) with high Nb/Mo additions, β-solidification pathway imparts good hot workability, enabling forging | Ti-(40-45)Al-(2-8)Nb-(1-8)(Cr,Mn,V,Mo)- (0-0.5)(B,C)[37] | Forging | USA |
| Ti-46.2Al-2Cr-3Nb-0.2W-0.2C-0.2B-0.15Si(K5)[38-39] | Forging | USA |
Ti-(42-44)Al-(3-5)Nb-(0.1-2)Mo-(0.1-1.0)B e.g., TNM[40-41] | Forging | Austria |
Ti-(40-45)Al-(5-10)Nb-(B,C) e.g.,TNB-V5[42] | Forging | Germany |
| Ti-43Al-4Nb-1Mo-0.5B[43] | Casting | China |
Medium Al (≥46%) with high Nb addition, superior high-temperature oxidation resistance and creep capability | Ti-46Al-5Nb-0.1C[44] | Casting | China |
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