TiC strengthened CoCrNi medium entropy alloy:Dissolution and precipitation of TiC and its effect on microstructure and performance

作     者：Yong-gang TONG Yan-lin CAI Yong-le HU Hong-feng HUANG Xian-cheng ZHANG Hao ZHANG 仝永刚;蔡炎林;胡永乐;黄宏锋;张显程;张浩

作者机构：College of Automobile and Mechanical EngineeringChangsha University of Science and TechnologyChangsha 410114China Key Laboratory of New Processing Technology for Nonferrous Metal&MaterialsMinistry of EducationGuilin University of TechnologyGuilin 541004China School of Mechanical and Power EngineeringEast China University of Science and TechnologyShanghai 200237China 

出 版 物：《Transactions of Nonferrous Metals Society of China》 (中国有色金属学报（英文版）)

年 卷 期：2022年第32卷第7期

页      面：2266-2275页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：sponsored by the National Key R&D Program of China (No.2018YFC1902401) the National Natural Science Foundation of China(No.52005053) Open Fund of Key Laboratory of New Processing Technology for Nonferrous Metal & Materials Ministry of Education,China (No.20KF-24) 

主　　题：medium entropy alloy TiC corrosion resistance microstructure mechanical properties 

摘      要：In order to improve the strength and corrosion resistance of CoCrNi medium entropy alloy,TiC strengthened CoCrNi medium entropy alloy(CoCrNi/(TiC)_(x)(x=0.1,0.2,0.4))was designed by addition of different amounts of *** effects of TiC content on the microstructure,mechanical properties,and corrosion resistance of the alloy were *** was found that the precipitation morphologies of TiC changed from lamellar eutectic to needle structure with the increase of TiC content,and finally formed mixed needled and bulk TiC *** appears as a dissolution−precipitation phenomenon in the CoCrNi alloy,which is important for the mechanical properties and corrosion resistance of the CoCrNi/(TiC)_(x) *** strength of alloy was enhanced obviously after the addition of *** compressive yield strength of CoCrNi/(TiC)_(0.4) alloy reached 746 MPa,much larger than that of the CoCrNi medium entropy alloy,108 ***,the addition of TiC was found to improve the corrosion resistance of CoCrNi medium entropy alloy in the salt solution.