期刊
出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2017.12.103
关键词
Magnesium; Microstructure; Texture; Dynamic recrystallization; Mechanical properties
类别
资金
- National Natural Science Foundation of China [51474241, 51771230]
The dynamic recrystallization (DRX) behaviors of a Mg-Gd-Y-Zn-Zr alloy were studied in this paper. The samples were divided into two groups (#1 and #2) and had different morphologies and distributions of long-period stacking order (LPSO) phases. The sample #1 had both laminar and block-shaped LPSO phases while the sample #2 only had block-shaped LPSO phases. The initial grain size was about 200 gm in both the samples #1 and #2. During hot compression at 763 K, the laminar IPSO phases in the sample #1 could motivate kink bands and delayed the DRX, so that the volume fraction of DRX grains was only 15% at a logarithmic strain of epsilon = 1.5; by contrast, both the twins and block-shaped LPSO phases in the sample #2 could assist the DRX, which led to a high volume fraction of DRX grains (70%) at a logarithmic strain of epsilon = 1.5. Room temperature tensile tests after hot compression indicated that the sample #1 had high yield strength while the sample #2 had high ductility. It was considered that their different mechanical properties were attributed to both the basal texture intensity and the volume fraction of DRX grains.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据