β凝固TiAl合金β/B2相演变行为及控制研究进展  

Research Progress on Evolution Behavior and Control of β/B2 Phase in β-solidified TiAl Alloy

作　　者：杨劼人 YANG Jieren(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：《铸造技术》2022年第4期237-244,共8页Foundry Technology

基　　金：国家自然科学基金(52074229,51401168)。

摘　　要：β/B2相是β凝固TiAl合金中的重要组成相,对合金的力学性能有显著影响。β/B2相的形成、分解和转变受合金成分、冷却过程、时效参数等多重因素影响,其演变规律和机制较为复杂。围绕β/B2相演变及控制,结合高NbTiAl合金,综述了β/B2相及其衍生相在受控冷却和时效过程中形成、分解和转变的规律及机制研究。β/B2 phase is an important component phase in β-solidified Ti Al alloy, which has a significant effect on the mechanical properties of the alloy. The formation, decomposition and transformation of β/B2 phase are affected by many factors, such as alloy composition, cooling process and aging parameters. Its evolution law and mechanism are complicated.In this paper, the evolution and control of β/B2 phase and the mechanism of β/B2 phase formation, decomposition and transformation during controlled cooling and aging in high Nb-TiAl alloy are reviewed, which can provide reference for the fine-tuning of β-solidified Ti Al alloy microstructure.

关 键 词：TIAL合金 β凝固 冷却 时效 相变 

分 类 号：TG146.2[一般工业技术—材料科学与工程]