Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5458156 | Journal of Alloys and Compounds | 2017 | 9 Pages |
Abstract
In this paper, we report a new single phase solid solution as-cast Mg-1Zn-0.4Zr-0.2Yb alloy that possesses excellent ductility (δf = 38.5%) and strong work hardening effect (n = 0.38) at room temperature. The low stacking fault energy (SFE) in Mg-1Zn-0.4Zr-0.2Yb alloy might be due to the addition of trace Yb, and the low SFE is conducive to improving the activity of basal dislocation slip, activations of non-basal dislocations slips and the formation of deformation twins during tensile deformation, eventually leading to the development of the ductility in Mg-1Zn-0.4Zr-0.2Yb alloy. The strong work hardening effect of Mg-1Zn-0.4Zr-0.2Yb alloy is due to the formation of stacking faults and deformation twins induced by low SFE, which can remarkably store dislocations, restrict dislocation motions and result in multiplication and storage of dislocations at twin boundaries.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Dongdong Zhang, Deping Zhang, Fanqiang Bu, Xinlin Li, Baishun Li, Tingliang Yan, Kai Guan, Qiang Yang, Xiaojuan Liu, Jian Meng,