TiAl合金形变热处理及超细晶制备技术进展  

Progress in thermomechanical treatment and ultrafine grain preparation technology of TiAl alloys

作　　者：荣川 杨劼人 杜新 刘泽栋 马云路 RONG Chuan;YANG Jie-ren;DU Xin;LIU Ze-dong;MA Yun-lu(School of Materials Science and Engineering,Sichuan University,Chengdu 610065,China)

机构地区：[1]四川大学材料科学与工程学院,四川成都610065

出　　处：《材料热处理学报》2025年第2期28-43,共16页Transactions of Materials and Heat Treatment

基　　金：国家自然科学基金(52371035);国家重点研发计划(2023YFB3710700);四川省重大科技专项(23ZDZX0031)。

摘　　要：TiAl合金具有轻质、耐高温、高强的优点,在航空航天领域具有良好的应用前景。然而,室温塑性低、加工成型能力不足,限制了其广泛应用。组织细化是提高TiAl合金性能的主要途径和当前研究热点。形变热处理将变形与热处理工艺结合,可以显著细化组织、大幅改善性能。本文综述了TiAl合金的形变热处理技术,系统阐述了形变热处理对合金多尺度结构细化和综合力学性能提升的作用原理及规律,为TiAl合金设计、工艺制定、工程化应用提供参考指导。TiAl alloys have the advantages of lightweight,high temperature resistance,and high strength,and thus have great prospects for application in the aerospace field.However,their wide application is limited by low room-temperature plasticity and insufficient processing and molding capabilities.Microstructure refinement is the main approach to improve the performance of the TiAl alloys and is currently a research hotspot.Thermomechanical treatment(TMT) combines deformation and heat treatment processes,which can significantly refine the microstructure and improve the mechanical properties.This paper provides an overview of the TMT technology for the TiAl alloys,systematically elaborating on the principles and laws of TMT in refining the multi-scale microstructure and improving the comprehensive mechanical properties of the alloys.The aim is to provide reference guidance for the design,process development,and engineering application of the TiAl alloys.

关 键 词：TIAL合金 形变热处理 组织细化 力学性能 

分 类 号：TG146.2[一般工业技术—材料科学与工程]