通过快速加热提高钛合金高温性能：一种新的边界工程方法

IF 11.2 1区材料科学 Q1 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Materials Science & Technology Pub Date : 2025-05-29 DOI:10.1016/j.jmst.2025.05.014

Wentao Chen, Kehuan Wang, Gang Liu

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引用次数: 0

摘要

由于传统方法固有的成本和时间限制，如何提升高温钛合金的综合性能一直是业界长期关注的话题。在本研究中，提出了一种新的边界工程方法，利用快速加热和时效（RHA）对工业Ti60合金。通过制备由亚微米级片层α相（αm）、纳米级片层α相（αn）和多尺度硅化物组成的非均匀微观结构，该合金在600℃和室温下均获得了优异的强度和延展性。与初始材料相比，极限抗拉强度（UTS）和蠕变断裂寿命显著提高。性能的显著提高主要是由于细化的片层α相和多尺度硅化物的晶界强化。目前的工作提供了一种新的策略来释放现有钛合金在极端温度应用中的潜力。

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Enhancement of high-temperature performance in titanium alloys through rapid heating: a novel boundary engineering approach

How to upgrade the comprehensive performance in high-temperature titanium alloys is a long-lasting topic in the industry due to the inherent cost and time limitations of conventional methods. In this study, a novel boundary engineering approach utilizing rapid heating and aging (RHA) is proposed for the commercial Ti60 alloy. By fabricating a heterogeneous microstructure comprising submicron-sized lamellar α phase (α_m), nanosized lamellar α phase (α_n) and multiscale silicides, the RHA-treated alloy achieved an exceptional combination of strength and ductility at both 600°C and room temperature. Compared with the initial material, the ultimate tensile strength (UTS) and creep rupture life were significantly enhanced. The greatly enhanced performance is predominantly attributed to grain boundary strengthening of refined lamellar α phase and multiscale silicides. The present work provides a novel strategy to unlock the potential of existing titanium alloys for extreme-temperature applications.

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来源期刊

Journal of Materials Science & Technology 工程技术-材料科学：综合

CiteScore

20.00

自引率

11.00%

发文量

995

审稿时长

13 days

期刊介绍： Journal of Materials Science & Technology strives to promote global collaboration in the field of materials science and technology. It primarily publishes original research papers, invited review articles, letters, research notes, and summaries of scientific achievements. The journal covers a wide range of materials science and technology topics, including metallic materials, inorganic nonmetallic materials, and composite materials.