TiAl合金片层组织不连续粗化转变

doi:10.11896/cldb.24120163

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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

Published: 10 January 2026 Online: 2026-01-09

CLC number:

TG111.5

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	WANG Kehan

Cite this article:

WANG Kehan. Review on Lamellar Structure Discontinuous Coarsening Transition in TiAl Alloy[J]. Materials Reports, 2026, 40(1): 24120163-7.

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https://www.mater-rep.com/EN/10.11896/cldb.24120163 OR https://www.mater-rep.com/EN/Y2026/V40/I1/24120163

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