Wear resistance optimized by heat treatment of an in-situ TiC strengthened AlCoCrFeNi laser cladding coating

IF 2.4 4区材料科学 Q2 MATERIALS SCIENCE, CHARACTERIZATION & TESTING

Materials Testing Pub Date : 2024-05-15 DOI:10.1515/mt-2023-0412

Mingxin Wang, Yutao Li, Tounan Jin, Hanguang Fu

引用次数: 0

Abstract

An AlCoCrFeNi high-entropy alloy coating containing 20 % mass fraction of TiC was prepared using the laser cladding method. The effect of heat treatment on the coating’s microstructure was analyzed through X-ray diffraction (XRD), scanning electron microscopy (SEM), electron backscattered diffraction (EBSD), and transmission electron microscopy (TEM). It was observed that following high-temperature heat treatment, the phase transition of AlCoCrFeNi–20%TiC shifted from BCC to FCC at 750 °C. Through microhardness and wear resistance tests, the increased diffusion of carbon post-heat treatment led to a higher precipitation of TiC-reinforced phases, resulting in exceptional wear resistance with a notable 128.3 % enhancement.

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通过热处理优化原位 TiC 强化 AlCoCrFeNi 激光熔覆涂层的耐磨性

采用激光熔覆法制备了含有 20% 质量分数 TiC 的 AlCoCrFeNi 高熵合金涂层。通过 X 射线衍射 (XRD)、扫描电子显微镜 (SEM)、电子背散射衍射 (EBSD) 和透射电子显微镜 (TEM) 分析了热处理对涂层微观结构的影响。结果表明，经过高温热处理后，AlCoCrFeNi-20%TiC 的相变在 750 ℃ 时从 BCC 转变为 FCC。通过显微硬度和耐磨性测试，热处理后碳的扩散增加导致 TiC 增强相的析出增加，从而使耐磨性显著提高了 128.3%。

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

Materials Testing 工程技术-材料科学：表征与测试

CiteScore

4.20

自引率

36.00%

发文量

165

审稿时长

4-8 weeks

期刊介绍： Materials Testing is a SCI-listed English language journal dealing with all aspects of material and component testing with a special focus on transfer between laboratory research into industrial application. The journal provides first-hand information on non-destructive, destructive, optical, physical and chemical test procedures. It contains exclusive articles which are peer-reviewed applying respectively high international quality criterions.