Insights on microstructure and tribological properties of FeCoCrNiMo HEA reinforced CuSn coatings by laser cladding for monorail brakes

IF 6.1 1区工程技术 Q1 ENGINEERING, MECHANICAL

Wear Pub Date : 2025-07-12 DOI:10.1016/j.wear.2025.206244

Yuling Lu , Yuxing Peng , Xiangdong Chang , Weijie Xiu , Zhiyuan Shi

引用次数: 0

Abstract

FeCoCrNiMo high–entropy alloy (HEA) was added into CuSn coating by laser cladding (LC), which highlighted the needs for more durable and wear–resistant alternatives. The effects of HEA mass fraction on the tribological properties were investigated, and the wear mechanism was also discussed in detail. The results show that the average coefficients of friction (COFs) of CuSn–xHEA coatings are decreased with the increase of HEA mass fraction due to the lubrication effect; while the wear rates are first increased and then decreased, showing that the appropriate HEA amount plays the role of wear resistance. The wear mechanism is mainly changed from abrasive wear and plastic deformation to adhesive wear, which is attributed to the improvement of coating hardness by the addition of HEA.

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单轨制动器用激光熔覆feccrnimo HEA增强CuSn涂层的微观结构和摩擦学性能研究

通过激光熔覆（LC）将feccrnimo高熵合金（HEA）添加到CuSn涂层中，这凸显了对更耐用、更耐磨替代品的需求。研究了HEA质量分数对复合材料摩擦学性能的影响，并对其磨损机理进行了详细讨论。结果表明：CuSn-xHEA涂层的平均摩擦系数（COFs）随着HEA质量分数的增加而减小；而磨损率呈现先升高后降低的趋势，说明适当的HEA用量起到了耐磨性的作用。磨损机理主要由磨粒磨损和塑性变形转变为粘着磨损，这是由于HEA的加入提高了涂层硬度所致。

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

Wear 工程技术-材料科学：综合

CiteScore

8.80

自引率

8.00%

发文量

280

审稿时长

47 days

期刊介绍： Wear journal is dedicated to the advancement of basic and applied knowledge concerning the nature of wear of materials. Broadly, topics of interest range from development of fundamental understanding of the mechanisms of wear to innovative solutions to practical engineering problems. Authors of experimental studies are expected to comment on the repeatability of the data, and whenever possible, conduct multiple measurements under similar testing conditions. Further, Wear embraces the highest standards of professional ethics, and the detection of matching content, either in written or graphical form, from other publications by the current authors or by others, may result in rejection.