Influence of Heat Treatment on Microstructures and Impact Toughness of Mg-Al-Zn Alloy
- 点击次数：
- 影响因子：2.471
- DOI码：10.1007/s11837-019-03585-7
- 发表刊物：JOM: the journal of the Minerals, Metals & Materials Society
- 摘要：Microstructures and impact properties of the rolled Mg-8.10Al-0.46Zn-0.18Mn-0.18Ag (wt.%) alloy were investigated under various thermal conditions including as-rolled, solid solution (T4) and solid solution plus aging (T6) states. The results show that the impact toughness of the as-rolled alloy is slightly enhanced after solution treatment but remarkably reduced by the subsequent aging process, exhibiting a similar trend with the elongation of the alloy. Fractography analysis suggests that the impact toughness variations are closely associated with the changes in the deformation mode: the superior impact toughness of the as-rolled and T4 samples are mainly attributed to the occurrence of profuse twins during impact testing, while, in the T6 sample, the twinning activity is significantly suppressed due to the presence of beta-Mg17Al12 phases. In addition, the lamellar-shaped beta-Mg17Al12 phases are easy to fracture, which accelerates the crack propagation and thus degrades the impact property.
- 合写作者：Chuming Liu, Yingchun Wan, Jiansheng Wei, Yonghao Gao, Shunong Jiang, Zhiyong Chen
- 第一作者：Longhui Mao
- 论文类型：期刊论文
- 论文编号：WOS:000477633700053
- 学科门类：工学
- 一级学科：材料科学与工程
- 文献类型：J
- 卷号：71
- 期号：8
- 页面范围：2874-2883
- ISSN号：1047-4838
- 是否译文：否
- 发表时间：2019-09-01
- 收录刊物：EI、SCI
