Structure evolution in undercooled CoCrNi medium entropy alloys by glass fluxing method  

作　　者：Subo YU Aleksandr SHERSTNEV Mikhail MARKOVSKII Daria KATAITSEVA Gong LI 

机构地区：[1]State Key Laboratory of Metastable Materials Science and Technology,Yanshan University,Qinhuangdao 066004,People’s Republic of China

出　　处：《Research and Application of Materials Science》2022年第2期5-9,共5页材料科学与应用（英文）

基　　金：The support of this work was fromNational Key R&D Program of China(Grant No:2022YFA1603800);the National Natural Science Foundation of China(Grant No:12274362).

摘　　要：Undercooling of ternary CoCrNimediumentropy alloy(MEA)was achieved by molten glass fluxing method.The influence of undercooling on microstructure and mechanical properties of was investigated.The microstructure changes during the undercooling process identified by transmission electron microscope and scanning electron microscope shows that the grain size and intergranular phase all change after the undercooling treatment.The yield strength of the ternary MEAincreased significantly after undercooling treatment,which attribute to the refined grain size and the formation of the new phase.Undercooling method can be used as a potential method to modify the microstructure and improve the mechanical properties of MEAs.

关 键 词：Medium-entropy alloy UNDERCOOLING microstructure mechanical properties 

分 类 号：TG1[金属学及工艺—金属学]