V、Ti、Si、Zr对CoCrFeMnNi高熵合金组织与性能的影响  

Effects of V,Ti,Si and Zr elements on microstructure and properties of CoCrFeMnNi high entropy alloy

作　　者：张太超[1] 李俊魁 徐向俊 韩柯[4] 彭竹琴[1] Zhang Taichao;Li Junkui;Xu Xiangjun;Han Ke;Peng Zhuqin(Department of Material and Chemical Engineering, Zhongyuan University of Technology, Zhengzhou Henan 450007, China;State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao Hebei 066004, China;School of Mechanic and Electrical Engineering, Yangtze Normal University, Chongqing 408100, China;State Key Laboratory of Advanced Welding and Joinig, Harbin Institute of Technology, Harhin Heilongjiang 150001, China)

机构地区：[1]中原工学院材料与化工学院,河南郑州450007 [2]燕山大学亚稳材料制备技术与科学国家重点试验室,河北秦皇岛066004 [3]长江师范学院机械与电气工程学院,重庆408100 [4]哈尔滨工业大学先进焊接与连接国家重点试验室,黑龙江哈尔滨150001

出　　处：《金属热处理》2018年第6期28-33,共6页Heat Treatment of Metals

基　　金：国家自然科学基金(U1204508);河南省自然科学基金(U1204508)

摘　　要：通过制备Co Cr Fe Mn Ni X（X=V,Ti,Si,Zr）高熵合金,研究了原子尺寸差异δ与合金的组织、相结构和磨损性能之间的关系。研究结果表明：随着δ值增大,合金的XRD衍射强度逐渐降低,合金由FCC单相结构过渡到FCC＋BCC双相结构;随着δ值的增大,对应合金的摩擦因数降低,硬度和磨损性能提高。当δ值大于11.40%时,合金的显微组织、相结构、硬度和磨损性能均发生显著变化,δ=11.40%为Co Cr Fe Mn Ni X高熵合金组织和性能发生突变的阈值。The relationship between the atomic radius difference（ δ） and the microstructure,phase structure and wear properties of Co Cr Fe Mn Ni X（ X = V,Ti,Si,Zr） high entropy alloys were studied by preparing the alloys. The results indicate that with the increase of δvalue,the XRD diffraction intensity decreases gradually and the phase structure transforms from FCC to FCC ＋ BCC,as well the friction coefficient decreases and the microhardness and wear properties increase. When the δ value is greater than 11. 40%,the microstructure,phase,microhardness and wear properties of the alloys change remarkably. That δ = 11. 40% is the threshold for the abrupt change of microstructure and properties of the Co Cr Fe Mn Ni X high entropy alloy.

关 键 词：CoCrFeMnNi高熵合金 原子尺度差异 显微组织 磨损性能 

分 类 号：TG174.44[金属学及工艺—金属表面处理]