Effect of compression ratio on microstructure evolution of Mg-10%Al-1%Zn-1%Si alloy prepared by SIMA process

Li-jieCAO,Guo-ruiMA,Chun-xiaWANG,Zheng-jianCHEN,Jia-hengZHANG,

doi:10.1016/S1003-6326(21)65678-9

Transactions of Nonferrous Metals Society of China >

2021 , Vol. 31 >Issue 9: 2597 - 2605

DOI: https://doi.org/10.1016/S1003-6326(21)65678-9

Materials Science and Engineering

Effect of compression ratio on microstructure evolution of Mg-10%Al-1%Zn-1%Si alloy prepared by SIMA process

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Li-jie CAO¹, Guo-rui MA², Chun-xia WANG³, Zheng-jian CHEN⁴, Jia-heng ZHANG^4,5

1. School of Mechanical and Automotive Engineering, Shanghai University of Engineering Science, Shanghai 201600, China;
2. Medical Device R&D Center, Zhuhai Institute of Advanced Technology Chinese Academy of Sciences, Zhuhai 519000, China;
3. College of Materials Science and Engineering, Guilin University of Technology, Guilin 541004, China;
4. Biomaterials R&D Center, Zhuhai Institute of Advanced Technology Chinese Academy of Sciences, Zhuhai 519000, China;
5. School of Materials Science and Engineering, Harbin Institute of Technology (Shenzhen), Shenzhen 518055, China

Online published: 2021-09-25

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Abstract

A new Mg-10%Al-1%Zn-1%Si alloy with non-dendritic microstructure was prepared by strain induced melt activation (SIMA) process. The effect of compression ratio on the evolution of semisolid microstructure of the experimental alloy was investigated. The results indicate that the average size of α-Mg grains decreases and spheroidizing tendency becomes more obvious with the compression ratios increasing from 0 to 40%. In addition, the eutectic Mg₂Si phase in the Mg-10%Al-1%Zn-1%Si alloy transforms completely from the initial fishbone shape to globular shape by SIMA process. With the increasing of compression ratio, the morphology and average size of Mg₂Si phases do not change obviously. The morphology modification mechanism of Mg₂Si phase in Mg-10%Al-1%Zn- 1%Si alloy by SIMA process was also studied.

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Li-jieCAO,Guo-ruiMA,Chun-xiaWANG,Zheng-jianCHEN,Jia-hengZHANG, . Effect of compression ratio on microstructure evolution of Mg-10%Al-1%Zn-1%Si alloy prepared by SIMA process[J]. Transactions of Nonferrous Metals Society of China, 2021 , 31(9) : 2597 -2605 . DOI: 10.1016/S1003-6326(21)65678-9

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