Strengthening behavior of AlCoCrFeNi(TiN)_(x) high-entropy alloy coatings fabricated by plasma spraying and laser remelting  

作　　者：Bingqian Jin Nannan Zhang Shuo Yin 

机构地区：[1]Department of Material Science and Engineering,Shenyang University of Technology,Shenyang 110870,China [2]Department of Mechanical,Manufacturing and Biomedical Engineering,Trinity College Dublin,The University of Dublin,Parsons Building,Dublin 2,Ireland

出　　处：《Journal of Materials Science & Technology》2022年第26期163-173,共11页材料科学技术（英文版）

基　　金：Natural Science Foundation of Liaoning Province(No.2019-MS-247);Liao Ning Revitalization Talents Program(No.XLYC1807178);Research Fund of the State Key Laboratory of Solidification Processing(No.SKLSP202011);International Cooperation Project of Guangdong Province(No.2021A0505030052)。

摘　　要：High-entropy alloy(HEA)coatings are of great importance in the fabrication of wear resistance materials.HEA coatings containing ceramic particles as reinforcement phase usually have better wear performance.In this study,AlCoCrFe Ni(TiN)_(x)(x:molar ratio;x=0,0.2,0.4,0.6,0.8,1.0)HEA coatings were fabricated on Q235 steel by plasma spray first and then subjected to laser remelting.The experimental results confirm that plasma spray together with post laser remelting could result in the in-situ formation of TiN-Al_(2)O_(3) ceramic particles and cuboidal B2 phase in the AlCoCrFeNi(TiN)_(x) HEA coatings.The in-situ TiN-Al_(2)O_(3) and nano-cuboidal B2 precipitation phase strengthened the coatings and improved their wearresistance properties.Due to the dispersion of hard phase and nano-particles resulting from second heating,the microhardness of the Al Co Cr Fe Ni(Ti N)coatings significantly increased from 493 to 851 HV after laser remelting.For the same reasons,the wear-resistance performance was also significantly promoted after laser remelting.

关 键 词：High-entropy alloy COATINGS CERAMICS Laser remelting MICROSTRUCTURE Wear resistance 

分 类 号：TG174.4[金属学及工艺—金属表面处理]