Structure Transition Mechanism in Undercooled CuNi Alloys  

作　　者：AN Hongen Nancy Julius Siambun Bih-Lii Chuab Melvin Gan Jet Hong LI Hongtao 安红恩;Nancy Julius Siambun;Bih-Lii Chuab;Melvin Gan Jet Hong;LI Hongtao(Faculty of Engineering,University Malaysia Sabah,Kota Kinabalu 88400,Malaysia;College of Mechanical and Electronic Engineering,Huanghe Jiaotong University,Jiaozuo 454950,China;Henan Engineering Technology Research Center on Intelligent Manufacturing Technology and Equipment,Jiaozuo 454950,China)

机构地区：[1]Faculty of Engineering,University Malaysia Sabah,Kota Kinabalu 88400,Malaysia [2]College of Mechanical and Electronic Engineering,Huanghe Jiaotong University,Jiaozuo 454950,China [3]Henan Engineering Technology Research Center on Intelligent Manufacturing Technology and Equipment,Jiaozuo 454950,China

出　　处：《Journal of Wuhan University of Technology(Materials Science)》2021年第6期880-883,共4页武汉理工大学学报（材料科学英文版）

基　　金：Funded by the Key research and Development and Promotion Project in Henan Province(212102210267)。

摘　　要：Taking a Cu55Ni45 alloy as experimental alloy systems,we systematically studied the method of obtaining deep undercooling of alloy melt.Stable deep undercooling of alloy melt was obtained by the combination of molten glass purification and cyclic overheating.Combined with the nucleation and growth mechanism of undercooled melt,the microstructure evolution and grain refinement mechanism of the alloy were systematically studied in a wide undercooling range.The grain refinement solidification structure under large undercooling was analyzed by EBSD technology.Combined with the typical characteristics of recrystallization in metallographic pictures,it was finally confirmed that the grain refinement was caused by recrystallization.

关 键 词：microstructure refinement UNDERCOOLING Cu-Ni alloys 

分 类 号：TG111.4[金属学及工艺—物理冶金]