Effect of Co on Microstructure Transformation and Refinement Mechanism of Undercooled Cu-Ni Alloy

作     者：Willey Liew Yun Hsien 安洪恩 Nancy Julius Siambun Bih-Lii Chuab Willey Liew Yun Hsien;AN Hongen;Nancy Julius Siambun;Bih-Lii Chuab

作者机构：Faculty of EngineeringUniversity Malaysia SabahKota Kinabalu88400Malaysia College of Mechanical and Electronic EngineeringHuanghe Jiaotong UniversityJiaozuo454950China Henan Engineering Technology Research Center on Intelligent Manufacturing Technology and EquipmentJiaozuo454950China 

出 版 物：《Journal of Wuhan University of Technology(Materials Science)》 (武汉理工大学学报（材料科学英文版）)

年 卷 期：2023年第38卷第4期

页      面：877-884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：Funded by the Basic Research Projects in Shanxi Province(No.202103021224183) 

主　　题：rapid solidification undercooling microstructure refinement structure 

摘      要：Both Cu60Ni38Co2 and Cu60Ni40 alloy were naturally cooled after rapid solidification from the liquid *** transformation law of the microstructure characteristics of the rapidly solidified alloy with the change of undercooling(DT)was systematically *** was found that the two alloys experienced the same transformation *** refinement structures under different undercoolings were characterized by electron backscatter diffraction(EBSD).The experimental results show that the characteristics of the refinement structure of the two alloys with low undercooling are the same,whereas,the characteristics of the refinement structure with high undercooling are *** transmission electron microscope(TEM)results of Cu60Ni38Co2 alloy show that the dislocation network density of low undercooled microstructure is lower than that of high undercooled *** combining EBSD and TEM,it can be confirmed that the dendrite remelting fracture is the reason for the refinement of the low undercooled structure,while the high undercooled structure is refined due to recrystallization.