Microstructure and Mechanical Behavior of Mg-Based Bimetal Plates with High Formability Sleeve by Co-extrusion  

作　　者：Yue-Hui Dang Sheng-Lin Liu Xiao-Lei Ai Xiao-Wei Feng Bo Feng Zhuo Tian Ying-Fei Lin Huan-Tao Chen Kai-Hong Zheng 

机构地区：[1]School of Materials Science and Engineering,Chang’an University,Shaanxi 710064,China [2]Guangdong Key Laboratory of Metal Toughening Technology and Application,Institute of New Materials,Guangdong Academy of Sciences,Guangzhou 510650,China

出　　处：《Acta Metallurgica Sinica(English Letters)》2024年第3期499-512,共14页金属学报（英文版）

基　　金：supported by the National Key Research and Development Program of China (No.2022YFB3708400);the Guangdong Major Project of Basic and Applied Basic Research (No.2020B0301030006);the Guangdong Academy of Science Fund (No.2020GDASYL-20200101001,2021GDASYL-20210102002,2021GDASYL-20210103103);the National Natural Science Foundation of China (Nos.51905111 and 12002092);the Youth Talent Support Programme of Guangdong Provincial Association for Science and Technology (No.SKXRC202301);the Natural Science Foundation of Guangdong Province (Nos.2021A1515011730 and 2019A1515012096).

摘　　要：In this study,microstructure and mechanical behavior of two types of Mg-based bimetal plates with a high formability sleeve were systematically studied,with a great emphasis on the effect of the interface characteristic and the sleeve fraction on the plasticity of composite plates.The rule of mixtures(ROM)for elongation was also addressed.The results show that when there is no or thin diffusion layer with thickness of about 3μm,Mg-based bimetal plates have a good plasticity with elongation of about 19-24%,and the ROM predicted elongations are very close to the experimental ones.In contrast,with a diffusion layer about 95-155μm thick,Mg-based bimetal plates exhibit a poor plasticity with elongation of about 11-17%,and the experimental elongations largely deviate from the ROM predictions.The plasticity of Mg-based bimetal plates increases with increasing sleeve fraction.This study provides new insights on the plastic deformation of Mg-based bimetal composites with a high formability sleeve.

关 键 词：Mg-based composites CO-EXTRUSION MICROSTRUCTURE Mechanical behavior Plastic deformation 

分 类 号：TG139[一般工业技术—材料科学与工程]