Microstructural Evolution of Co_(35)Cr_(25)Fe_(30)Ni_(10) TRIP Complex Concentrated Alloy with the Addition of Minor Cu and Its Effect on Mechanical Properties

作     者：Haoyang Yu Wei Fang Jinfei Zhang Jiaxin Huang Jiaohui Yan Xin Zhang Juan Wang Jianhang Feng Fuxing Yin Haoyang Yu;Wei Fang;Jinfei Zhang;Jiaxin Huang;Jiaohui Yan;Xin Zhang;Juan Wang;Jianhang Feng;Fuxing Yin

作者机构：School of Materials Science and EngineeringHebei University of TechnologyTianjin 300132China Tianjin Key Laboratory of Materials Laminating Fabrication and Interface Control TechnologyTianjin 300132China Institute of Materials and ProcessingGuangdong Academy of SciencesGuangzhou 510650China 

出 版 物：《Acta Metallurgica Sinica(English Letters)》 (金属学报（英文版）)

年 卷 期：2022年第35卷第8期

页      面：1291-1300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：supported by the National Natural Science Foundation of China(No.51701061) the Natural Science Foundation of Hebei Province(No.E2019202059) the foundation strengthening program(No.2019-JCJQ-142) the Guangdong Province Key Area R&D Program(No.2020B0101340004) 

主　　题：Complex concentrated alloy High entropy alloy Cu addition Microstructures Mechanical properties 

摘      要：The influences of minor Cu addition(2 and 4 at.%)on the microstructural evolution and room-temperature mechanical property of metastable Co_(35)Cr_(25)Fe_(30)Ni_(10)are systemically investigated in the present *** results indicate that the thermally induced hexagonal close-packed(HCP)phase is absent when Cu was added,due to the increase in stacking fault energy(SFE).The 2%-Cu-added alloys showed the largest total elongation of 69%among the three *** the addition of Cu content reaching 4 at.%,heterogeneous grain structures composed of coarse grains(~9μm)and fine grains(~4μm)and Cu-rich precipitates near the grain boundary are observed,showing the highest yield ***,the segregation state of Cu was quantitatively characterized by electron probe microanalysis(EPMA).And effects of Cu addition on microstructures and tensile properties of(Co_(35)Cr_(25)Fe_(30)Ni_(10))_(100-x) Cu _(x) are also *** findings are beneficial to comprehensively understand the Cu-containing complex concentrated alloys.