Exploring the effects of solution temperature and cooling rate on α phase in a multicomponent titanium alloy: Insights from phase-field simulations

IF 5.8 2区材料科学 Q2 CHEMISTRY, PHYSICAL

Journal of Alloys and Compounds Pub Date : 2024-10-30 DOI:10.1016/j.jallcom.2024.177318

Tailu Cai, Gang Wang, Zhaoguo Qiu, Zhigang Zheng, Dechang Zeng, Chunguang Bai, Namin Xiao

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引用次数: 0

Abstract

The solution temperature and cooling rate during heat treatment of titanium alloys will affect their microstructure and thus mechanical properties. In this study, a phase-field model of the β →α solid state phase transformation in multicomponent titanium alloys is developed to investigate the effects of solution temperature and cooling rate on the microstructural evolution of Ti60 alloy. The thermodynamic calculations, the evolution of equiaxed α phase and solute distribution during solid solution process, the orientation of α lamellae during continuous cooling process, the morphology of α lamellae structure under different cooling rates, and the changing trend of α lamellae spacing, all corresponded well with the experimental results. Our work not only gives a clear outlook for the influence of solution temperature and cooling rate on α phase of Ti60 alloy, but also provides a feasible approach for developing heat treatment protocols in actual multicomponent titanium alloys.

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探索溶液温度和冷却速度对多组分钛合金中 α 相的影响：相场模拟的启示

钛合金热处理过程中的溶液温度和冷却速率会影响其微观结构，进而影响其机械性能。本研究建立了多组分钛合金中 β →α 固态相变的相场模型，以研究溶液温度和冷却速率对 Ti60 合金微观结构演变的影响。热力学计算结果、固溶过程中等轴α相的演变和溶质分布、连续冷却过程中α薄片的取向、不同冷却速率下α薄片结构的形貌以及α薄片间距的变化趋势均与实验结果吻合。我们的工作不仅明确了溶液温度和冷却速率对 Ti60 合金 α 相的影响，而且为实际多组分钛合金热处理方案的制定提供了可行的方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Journal of Alloys and Compounds 工程技术-材料科学：综合

CiteScore

11.10

自引率

14.50%

发文量

5146

审稿时长

67 days

期刊介绍： The Journal of Alloys and Compounds is intended to serve as an international medium for the publication of work on solid materials comprising compounds as well as alloys. Its great strength lies in the diversity of discipline which it encompasses, drawing together results from materials science, solid-state chemistry and physics.