Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1612924 | Journal of Alloys and Compounds | 2013 | 5 Pages |
Abstract
Friction stir processing (FSP) was applied to Mg-Gd-Y-Zn-Zr casting, resulting in significant dissolution of large grain boundary eutectic β-Mg3RE and long-period stacking ordered (LPSO) phases. A fine-grained structure with a grain size of â¼2.4 μm was developed in the FSP sample. Besides, fine LPSO lamellae with a width of â¼5 to â¼200 nm were distributed only within the grains in the FSP sample, which is different from that observed in both solution-treated and other plastically deformed counterparts. Formation of such special structure is attributed to the high temperature severe plastic deformation generated by FSP. The FSP Mg-Gd-Y-Zn-Zr exhibited high mechanical properties with a yield strength of â¼345 MPa and an elongation of â¼21.5%. This study provides an effective way for mechanical property optimization in LPSO-contained magnesium alloys.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Q. Yang, B.L. Xiao, D. Wang, M.Y. Zheng, K. Wu, Z.Y. Ma,