钛合金化学热处理研究进展

doi:10.13251/j.issn.0254-6051.2022.08.042

摘要/Abstract

摘要： 钛合金由于存在致密钝化膜、极高的氧亲和力和较低的原子扩散系数,表面强化很难实现。但钛的碳氮化物及固溶相具备优异的性能,通过渗氮、渗碳、渗硼、渗金属4种化学热处理技术可大幅度改变合金表层组织结构,提高表面硬度和强度。对钛合金化学热处理常用技术特征、渗层微观组织结构、强化机制及力学行为进行了归纳总结,并对未来化学热处理发展前景做了展望。

关键词: 钛合金, 化学热处理, 梯度组织, 硬度

Abstract: Due to the dense passivation film, high oxygen affinity and low atomic diffusion coefficient of titanium alloy, the surface strengthening is difficult to achieve. However, the carbonitride and solid solution phase of titanium have excellent properties. The surface structure of titanium alloy can be greatly changed by four chemical heat treatment technologies, such as nitriding, carburizing, boronizing, and diffusion metallizing, and the surface hardness and strength are improved. The common technical characteristics, microstructure, strengthening mechanism and mechanical behavior of the titanium alloy chemical heat treatment were summarized, and the development prospect of chemical heat treatment in the future was forecasted.

Key words: titanium alloy, chemical heat treatment, gradient structure, hardness

中图分类号:

U671.6

刘港, 刘静, 杨峰, 向庆. 钛合金化学热处理研究进展[J]. 金属热处理, 2022, 47(8): 249-256.

Liu Gang, Liu Jing, Yang Feng, Xiang Qing. Research progress of chemical heat treatment of titanium alloys[J]. Heat Treatment of Metals, 2022, 47(8): 249-256.

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