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TiAl基合金片层结构不连续粗化行为的研究进展
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中国航发北京航空材料研究院

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TG146.23

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国家自然科学基金资助(52371015)、北京市自然科学基金资助(2222092)和国家科技重大专项(J2019-VI-0003-0116)


Research progress of lamellar structure discontinuous coarsening behaviorin TiAl based alloy
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    摘要:

    TiAl合金由于其优异的比强度、比刚度、耐蚀性和抗氧化性,在高温结构材料领域有着良好的应用前景。片层结构是TiAl合金重要的微观结构形态,其不连续粗化行为直接影响合金的综合性能。本文介绍了TiAl合金片层结构的粗化类型,分析了不连续粗化的热力学及动力学,综述了近年来TiAl合金片层结构不连续粗化行为的研究进展,总结了化学成分及含量、微观组织特征、热处理工艺(如循环热处理周期、温度、时间、冷却速率等)、增材制造技术及应力等因素对不连续粗化的影响,展望了未来TiAl合金片层结构的设计与优化的发展方向。

    Abstract:

    TiAl alloy has a good application prospect in the field of high temperature structural materials due to its excellent specific strength, specific stiffness, corrosion resistance and oxidation resistance. The lamellar structure is an important microstructure of TiAl alloy, and its discontinuous coarsening behavior directly affects the comprehensive properties of the alloy. In this paper, the coarsening types of TiAl alloy lamellar structure are introduced. The thermodynamics and kinetics of discontinuous coarsening are analyzed. The research progress of discontinuous coarsening behavior of TiAl alloy lamellar structure in recent years is reviewed. The effects of chemical composition and content, microstructure characteristics, heat treatment process (such as cyclic heat treatment cycle, temperature, time, cooling rate, etc.), additive manufacturing technology and stress on discontinuous coarsening are summarized. The future development direction of TiAl alloy lamellar structure design and optimization is prospected.

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罗军,王曦,丁贤飞,南海,刘昌奎,李楠. TiAl基合金片层结构不连续粗化行为的研究进展[J].稀有金属材料与工程,,().[luojun, WangxI, Ding xianfei, Nan hai, Liu changkui, Li Nan. Research progress of lamellar structure discontinuous coarsening behaviorin TiAl based alloy[J]. Rare Metal Materials and Engineering,,().]
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  • 收稿日期:2024-08-14
  • 最后修改日期:2024-11-19
  • 录用日期:2024-12-02
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