面心立方高熵合金中层错能对变形机制的影响  

Effect of stacking fault energy on deformation mechanism in face centered cubic high-entropy alloy

作　　者：张波 李杰 吴凯迪 牛利冲 万德成 冯运莉 Zhang Bo;Li Jie;Wu Kaidi;Niu Lichong;Wan Decheng;Feng Yunli(School of Metallurgy and Energy,North China University of Technology,Tangshan Hebei 063210,China)

机构地区：[1]华北理工大学冶金与能源学院,河北唐山063210

出　　处：《金属热处理》2023年第8期225-234,共10页Heat Treatment of Metals

基　　金：国家自然科学基金面上项目(51974134);河北省科技重大专项(21281008Z);唐山市应用基础项目(21130237C,21130218C)。

摘　　要：高熵合金可以通过改变合金元素种类及配比等方法,调控合金体系的层错能及相稳定性,进而改变合金塑性变形机制,最终获得优异的综合力学性能。综述了面心立方高熵合金中影响层错能的因素,以及层错能对变形机制的影响,对通过调整层错能改变变形机制的激活顺序,进而影响力学性能的方法进行了展望。Properties of high-entropy alloys can be tuned by changing the types and ratios of alloying elements,which affect the stacking fault energy and phase stability of the alloy system,then the plastic deformation mechanism of the alloy can be changed,thus the optimal comprehensive mechanical properties can be obtained.The factors that affect the stacking fault energy of face centered cubic high-entropy alloys,and the influence of stacking fault energy on deformation mechanism,are reviewed.And the methods that can affect the mechanical properties by changing the activation order of deformation mechanisms by adjusting the stacking fault energy are prospected.

关 键 词：层错能 高熵合金 TWIP效应 TRIP效应 位错滑移 力学性能 

分 类 号：TG139[一般工业技术—材料科学与工程]