铸造技术2026，Vol.47Issue(3)：219-233,15.DOI:10.16410/j.issn1000-8365.2026.5292
TiAl合金增塑机制的研究进展
Research Progress on the Ductilization Mechanisms of TiAl Alloys
摘要
Abstract
As pivotal lightweight high-temperature structural materials in the aerospace field,TiAl alloys face major bottlenecks that restrict their engineering applications because of the poor workability resulting from their intrinsic room-temperature brittleness.A systematic review of recent research progress regarding the ductilization mechanisms of TiAl alloys is provided in this paper.It elucidates the underlying mechanisms by which alloying elements(such as V,Cr,and Mn)and trace elements(such as B,C,and Y)influence ductility.The influence of microstructural evolution on mechanical properties is analysed in depth,with a particular focus on the critical roles of long-period stacking ordered(LPSO)structures and polysynthetic twinned(PST)single crystals in achieving synergistic strength and ductility enhancement.With respect to fabrication processes,the breakthroughs achieved by techniques such as investment casting,canned forging/rolling,and selective electron beam melting(SEBM)in mitigating forming defects and optimizing solidification microstructures are comparatively analysed.Finally,integrated precision control based on the multiscale correlation of"composition-microstructure-process"is proposed as the core direction for the future development of TiAl alloys.关键词
TiAl合金/室温塑性/合金化/显微组织/制备技术Key words
TiAl alloys/room-temperature plasticity/alloying/microstructure/manufacturing technology分类
矿业与冶金引用本文复制引用
甄中昊,陈旸,常晨,魏代修,王祥辉,朱德民,刘旭,熊安辉,李泽,侯锐..TiAl合金增塑机制的研究进展[J].铸造技术,2026,47(3):219-233,15.基金项目
国家自然科学基金(52595663,52571145,92463301,92163215,12202201,52174364,52305379) （52595663,52571145,92463301,92163215,12202201,52174364,52305379）
国家重点研发计划(2024YFB3713503) （2024YFB3713503）
江苏省创新支撑计划(软科学研究)专项资助(BE2023024) （软科学研究）
江苏省自然科学基金重大项目(BK20212009,BK20220918) （BK20212009,BK20220918）
中国工程院-云南省政府战略研究与咨询项目(2024YNZH5) （2024YNZH5）
