Surface modification of plasma nitriding on AlxCoCrFeNi high-entropy alloys

查看全文 作　　者：Jinxiong [1]Hou;Wenwen [2]Song;Liwei [1]Lan;Junwei [1,3]Qiao

机构地区：[1]College of Materials Science and Engineering,Taiyuan University of Technology,Taiyuan,030024,China;[2]Steel Institute,RWTH Aachen University,Aachen,52072,Germany;[3]Key Laboratory of Interface Science and Engineering in Advanced Materials,Ministry of Education,Taiyuan University of Technology,Taiyuan,030024,China

出　　处：《Journal of Materials Science & Technology》索引2020年第47卷第13期,共6页

基　　金：supported financially by the opening project from the National Key Laboratory for Remanufacturing(No.61420050204);Transformation of Scientific and Technological Achievements Programs of Higher Education Institutions in Shanxi(2019);the financial support from the China Scholarship Council(CSC)。 摘　　要：Plasma nitriding is successfully employed in treating AlxCoCrFeNi high-entropy alloys(HEAs)with finelydivided Al content(i.e.,x values in molar ratio,x=0.1-0.8)to develop wear-resistant structural materials.Nitridation greatly removes the Al from the matrix that completely deplete the Ni-Al enriched phase,forming nanoscaled nitrides(AIN and CrN)precipitations near the surface.Nitriding promotes the hardness of present alloys with values widely ranging from 276 HV to 722 HV.Interestingly,the higher content the Al,the smaller thickness the nitrides layer,but the higher hardness due to the increased amount of hard nitrides phases and volume fraction of BCC phase.Significantly,plasma nitriding considerably improves the wear re sistance of AlxCoCrFeNi HEAs by 4-18 times. 关键词：Plasma nitriding High-entropy alloy Microstructure HARDNESS Wear and tribology

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Surface modification of plasma nitriding on AlxCoCrFeNi high-entropy alloys

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