铸造2026，Vol.75Issue(6)：621-645,25.DOI:10.27014/j.cnki.zhuzao.2026.0082
TiAl合金铸造缺陷研究进展
A Review on Casting Defects of TiAl Alloys
摘要
Abstract
The titanium aluminide(TiAl)alloys,endowed with low density,high specific strength,and excellent high-temperature properties,are ideal candidate materials for the low-pressure turbine blades in aero-engines.However,their high melting point and poor melt fluidity often result in casting defects such as the shrinkage cavity,shrinkage porosity,gas hole,segregation,and crack during casting process,which significantly degrade the tensile,fatigue,and high-temperature creep properties of the alloys.This paper reviews the characteristics and development history of TiAl alloys,with a focus on the influence of casting processes on the casting defects and mechanical properties,as well as the post-casting treatment technologies.The research results indicate that the casting process optimization and post-treatment technologies can effectively minimize the defects and enhance the mechanical performance of TiAl alloys.Finally,it is pointed out that the engineering application of cast TiAl alloys still faces significant challenges.Future efforts should focus on deepening the understanding of defect formation mechanisms and control methods,developing intelligent casting and post-processing technologies,and perfecting non-destructive testing and quality evaluation systems to achieve the integration of"alloy composition-casting process-defect control-microstructure and properties",thereby promoting the engineering application.关键词
TiAl合金/铸造工艺/铸造缺陷/热等静压/力学性能/组织调控Key words
TiAl alloy/casting process/casting defect/hot isostatic pressing(HIP)/mechanical property/microstructure regulation分类
矿业与冶金引用本文复制引用
刘欢,陈沛谕,陈旸,陈艺塬,王宾,魏代修,陈光..TiAl合金铸造缺陷研究进展[J].铸造,2026,75(6):621-645,25.基金项目
国家重点研发计划(2024YFB 3713503) （2024YFB 3713503）
国家自然科学基金(52595663,52571145,92463301,92163215,12202201,52174364,52305379) （52595663,52571145,92463301,92163215,12202201,52174364,52305379）
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）
