New nano-lamellar eutectic high-entropy alloy coating by laser cladding

被引：3
|
作者：
Liu, Yufei [1 ]
Cui, Xiufang [1 ]
Jin, Guo [1 ]
Wen, Xin [1 ]
Wang, Shuo [1 ]
Zhang, Yupeng [1 ]
机构：
[1] Harbin Engn Univ, Coll Mat Sci & Chem Engn, Harbin 150001, Peoples R China
来源：
MATERIALS CHEMISTRY AND PHYSICS | 2024年 / 320卷
关键词：
Eutectic high entropy alloy coating; Hardness; Wear resistance; MECHANICAL-PROPERTIES; MICROSTRUCTURE;
D O I：
10.1016/j.matchemphys.2024.129469
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A novel Al27Cr25Ti18Nb18Zr12 eutectic high entropy alloy (EHEA) coating with BCC/B2 and Laves phase has been developed by laser cladding on Ti-6Al-4V alloys. The average microhardness of EHEA coating was similar to 697.6HV(0.3), which significantly surpasses the values reported for most eutectic high-entropy alloy coatings. The strengthening effect and additional strain hardening sources generated by the intersecting nanometer-spaced stacking faults and Lomer-Cotrell locks which found in BCC/B2 phase are important reasons for the superior hardness. And the adhesive problem of Ti-6Al-4V alloy was ameliorated by the EHEA coating with lower friction coefficient (83.05 % of the Ti-6Al-4V alloy) and volumetric loss (27.75 % of the Ti-6Al-4V alloy).
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页数：6
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