4.6 Article

Effect of the Strain Rate on the Damping and Mechanical Properties of a ZK60 Magnesium Alloy

期刊

MATERIALS
卷 13, 期 13, 页码 -

出版社

MDPI
DOI: 10.3390/ma13132969

关键词

high strain rate; ZK60 alloy; mechanical properties; damping capacity; damping peak

资金

  1. Guangxi Natural Science Foundation Project [2016GXNSFDA380008]
  2. Liuzhou Science and Technology Development Plan Project [2017BD20301]

向作者/读者索取更多资源

High strain rate rolling (HRSS) of a ZK60 magnesium alloy at 300 degrees C with a strain rate from 5 s(-1)to 25 s(-1)was used to research the effect of the rate on the mechanical properties and damping capacity of the ZK60 alloy. The results show that as the strain rate increases, the tensile strength decreases from 355 MPa at 25 s(-1)to 310 MPa at 5 s(-1). Two damping peaks (P1 and P2) are detected in the high strain rate rolled ZK60 alloys at different strain rates. The P1 peak appears at low temperatures and is caused by grain boundaries sliding. The P2 peak appears at high temperatures and is caused by recrystallization. As the strain rate increases from 5 to 20 s(-1), the dynamic recrystallization (DRX) volume percent rises and the dislocation density decreases, both of which cause the P1 peak to become more and more obvious, and activation energy rises. At the same time, the dislocation density decreases and leads to a decrease in the storage energy, which reduces the recrystallization driving force and shifts the P2 peak to high temperatures. When the strain rate reaches 20 and 25 s(-1), DRX occurs fully in the sheet, so the activation energy of the P1 peak and the temperature where the P2 peak appears are basically equal.

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。

评论

主要评分

4.6
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据