TiAl合金片层组织不连续粗化转变

doi:10.11896/cldb.24120163

材料导报

2026, Vol. 40

Issue (1): 24120163-7 https://doi.org/10.11896/cldb.24120163

金属与金属基复合材料

TiAl合金片层组织不连续粗化转变

王柯涵^1,2, 刘涵^1,2, 宗骁^1,2, 梁永锋³, 南海^1,2, 林均品³, 丁贤飞^1,2,*

1 中国航发北京航空材料研究院,北京 100095
2 北京市先进钛合金精密成型工程技术研究中心,北京 100095
3 北京科技大学新金属材料国家重点实验室,北京 100083

Review on Lamellar Structure Discontinuous Coarsening Transition in TiAl Alloy

WANG Kehan^1,2, LIU Han^1,2, ZONG Xiao^1,2, LIANG Yongfeng³, NAN Hai^1,2, LIN Junpin³, DING Xianfei^1,2,*

1 AECC Beijing Institute of Aeronautical Material, Beijing 100095, China
2 Beijing Engineering Research Center of Advanced Titanium Alloy Precision Forming Technology, Beijing 100095, China
3 State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China

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摘要 TiAl合金具有优异的比强度、抗氧化、抗蠕变等特性,使其在高温结构材料领域有着广阔的应用前景。掌握其在近服役条件下的组织稳定性规律是实现其工程化应用的必然要求。片层结构是TiAl合金中最重要的微观结构形态,本文介绍了TiAl合金片层结构的连续粗化和不连续粗化类型,讨论了影响TiAl合金不连续粗化行为的各种因素,包括温度、时间、Al含量和片层组织的各向异性特性等。值得注意的是,目前的研究对不连续粗化转变与片层组织各向异性特性之间未能建立明确的关系,其过程中的物理冶金原理尚不明确,因此,需要从各向异性角度进一步丰富和完善对TiAl 合金不连续粗化转变机理的认识,这对后续TiAl合金材料的实际应用设计具有重要的意义。最后,分析了TiAl合金不连续粗化行为的热力学驱动力来源,包括化学自由能和界面能,并简述了不连续粗化在温度、时间和Al含量影响下表现出的动力学特征。

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	王柯涵
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	宗骁
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	南海
	林均品
	丁贤飞

关键词: TiAl合金片层组织不连续粗化微观组织相变驱动力

Abstract: TiAl alloy has excellent specific strength, oxidation resistance and creep resistance, which make it have a broad application prospect in the field of high temperature structural materials, and it is necessary to master the law of its organization stability in the near service condition to realize its engineering application. Lamellar structure is the most important microstructure in TiAl alloy. In this summary, the types of continuous and discontinuous coarsening of TiAl alloy lamellar structure were introduced. Various factors affecting the discontinuous coarsening behavior of TiAl alloy, including temperature, time, Al content and anisotropy of lamellar structure, were discussed. It is worth noting that no clear relationship has been established between the discontinuous coarsening transition and the anisotropy properties of the laminar structure, and the principle of physical metallurgy in the process is still unclear. Therefore, it is necessary to further enrich and improve the understanding of the discontinuous coarsening transition mechanism of TiAl alloy from the perspective of anisotropy. This is of great significance for the subsequent practical application design of TiAl alloy material. Finally, the thermodynamic driving forces of the discontinuous coarsening behavior of TiAl alloy, including che-mical free energy and interfacial energy, were analyzed, and the kinetic characteristics of discontinuous coarsening under the influence of tempe-rature, time and Al content were briefly described.

Key words: TiAl alloy lamellar structure discontinuous coarsening microstructure transformation driving force

出版日期: 2026-01-10 发布日期: 2026-01-09

ZTFLH:

TG111.5

基金资助: 国家自然科学基金(52371015);国家科技重大专项(J2019-VI-0003-0116)

通讯作者: * 丁贤飞,博士,中国航发北京航空材料研究院铸钛技术中心研究员、硕士研究生导师。目前主要从事钛合金、钛铝金属间化合物等高温结构材料设计、制备与精密成形工艺技术研究。xianfei.ding@biam.ac.cn

作者简介: 王柯涵,中国航发北京航空材料研究院硕士研究生。目前主要研究领域为钛铝金属间化合物。

引用本文:

王柯涵, 刘涵, 宗骁, 梁永锋, 南海, 林均品, 丁贤飞. TiAl合金片层组织不连续粗化转变[J]. 材料导报, 2026, 40(1): 24120163-7.
WANG Kehan. Review on Lamellar Structure Discontinuous Coarsening Transition in TiAl Alloy. Materials Reports, 2026, 40(1): 24120163-7.

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https://www.mater-rep.com/CN/10.11896/cldb.24120163 或 https://www.mater-rep.com/CN/Y2026/V40/I1/24120163

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