Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7978050 | Materials Science and Engineering: A | 2015 | 8 Pages |
Abstract
Reducing serious tension-compression yield asymmetry is one important concern for wrought Mg alloys. This study aims to exploit the influence of aging time on tensile and compressive deformation behaviors in rolled ZK60 alloy sheets. The experimental results show that the type and amount of precipitates are greatly dependent on aging time at 175 °C. A number of disk-like βâ²2 precipitates are present after aged for 10 h. However, rod-like βâ²1 precipitates are observed after 30 h and the amount of disk-like precipitates reduces. The tension-compression yield asymmetry of the as-solution ZK60 specimens is very serious. It is significantly improved with the formation of disk-like precipitates, while becomes worse with the presence of rod-like precipitates and the reduction of disk-like precipitates. This should be attributed to the disk-like and rod-like precipitates have different hardening effects on the main deformation modes of tension and compression deformations in the present ZK60 alloys.
Related Topics
Physical Sciences and Engineering
Materials Science
Materials Science (General)
Authors
Bo Song, Renlong Xin, Ning Guo, Jianbin Xu, Liyun Sun, Qing Liu,