钢铁钒钛2026，Vol.47Issue(1)：36-48,13.DOI:10.7513/j.issn.1004-7638.2026.01.005
电子束选区熔化增材制造TiAl合金及其热处理工艺研究进展
Research progress on electron beam melting additive manufacturing of TiAl alloys and heat treatment processes
摘要
Abstract
Electron Beam Melting(EBM)is an ideal forming method for additive manufacturing(AM)of brittle TiAl alloy components,enabling the formation of complex structures and the achievement of superior performance in TiAl alloys.Compared to other additive manufacturing techniques,EBM of-fers advantages such as high preheating temperatures,resistance to cracking,and low oxygen content,making it widely researched,especially for the Ti-48Al-2Cr-2Nb(4822)alloy.The average grain size of 4822 alloy prepared by EBM is typically less than 20 pm,significantly smaller than that of traditionally cast alloys.The room-temperature strength of 4822 alloy prepared by EBM can reach over 600 MPa,but it exhibits poor ductility and defects.Hot isostatic pressing(HIP)and high-temperature heat treatme-nt(HT)are important post-processing methods to enhance mechanical properties,increasing the room-temperature elongation to 1.3％.However,there are still many issues with the EBM process and HT of TiAl alloys.This paper reviews the recent research progress in EBM additive manufacturing of TiAl al-loys and their HT processes,analyzes and summarizes the current problems and countermeasures,and provides an outlook on the future development direction of additive manufacturing of TiAl alloys.关键词
TiAl合金/增材制造/电子束选区熔化/热处理/显微组织/力学性能Key words
TiAl alloy/additive manufacturing/electron beam melting/heat treatment/microstructure/mechanical properties分类
矿业与冶金引用本文复制引用
王双赞,葛庚午,卢东,梁永锋,林均品..电子束选区熔化增材制造TiAl合金及其热处理工艺研究进展[J].钢铁钒钛,2026,47(1):36-48,13.基金项目
国家重点研发计划项目(2021YFB3700500) （2021YFB3700500）
钒钛资源综合利用产业技术创新战略联盟资助项目(PGWX2023006). （PGWX2023006）
