摘要
γ-TiAl合金有诸多良好的高温性能并在许多领域广泛应用,但室温塑性较差在一定程度限制了该类合金的工程化应用。而合金成分设计优化不仅直接影响合金的凝固组织而且能最终改善合金的性能。从多元γ-TiAl合金的凝固路径、合金元素的添加、间隙原子的添加以及Al当量计算等方面总结了多元γ-TiAl合金成分的设计理念和主要成果。基于此,提出了合金设计的原则,并预测了多元γ-TiAl合金成分设计的发展趋势。
γ-TiAl alloys have a wide range of application because of good high temperature properties,but the poor plasticity at room temperature limits the engineering application of the alloys.The optimization of the alloy composition design not only directly affects the solidification microstructure of the alloy,but also improves the properties of the alloy.The design concept and main results of composition design inγ-TiAl alloys were summarized from solidification paths,addition of alloy elements,interstitial atom addition and Al-equivalent calculation.Based on this,the principle of the alloy design was put forward and the developmental trend of composition design ofγ-TiAl alloys was predicted.
作者
柳翊
金文中
安俊超
闵志宇
张伟
LIU Yi;JIN Wenzhong;AN Junchao;MIN Zhiyu;ZHANG Wei(School of Materials Science and Engineering,Luoyang Institute of Science and Technology,Luoyang 471023,China)
出处
《热加工工艺》
北大核心
2019年第20期10-14,19,共6页
Hot Working Technology
基金
河南省科技发展计划项目(122102210059)
河南省教育厅2017年科技攻关项目(172102210399)
河南省高等学校青年骨干教师资助计划项目(2015GGJS-109)
洛阳理工学院高层次人才科研启动项目(2017BZ05)
