Effect of Cryogenic Treatment on Mechanical Properties of Mg-2Zn-0.7Ce Alloy

2nd International Symposium on Resource Exploration and Environmental Science

生态环境科学

Li, Quan^1 ; Yuan, Zhi^2 ; Jiang, Aimin^1 ; Zhu, Weibo^1 ; She, Xinwei^1

Chongqing Academy of Science and Technology, Chongqing

401123, China^1

Guilin University of Aerospace Technology, Guilin

541000, China^2

关键词: As-extruded;    Fracture mechanisms;    Strength and elongations;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/170/3/032135/pdf
DOI  :  10.1088/1755-1315/170/3/032135

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

In this paper, The tensile tests of Mg-2Zn-0.7Ce (at. %) alloys before and after cryogenic show that the cryogenic treatment can significantly increase the plasticity of the alloy. The yield strength, tensile strength and elongation of the as-extruded alloy were 245 MPa, 197 MPa and 9.6%, respectively. After cryogenic treatment at -196°C for 24h, the elongation of the alloy increased to 17.5%, but the tensile strength did not change significantly, the hardness slightly increased, and the yield strength decreased slightly. The fracture mechanism of alloy after cryogenic treatment changes from brittle fracture to ductile fracture.