期刊
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
卷 21, 期 3, 页码 443-448出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/S1003-6326(11)60734-6
关键词
Al-Si-Mg alloy; dislocation; Mg(2)Si; secondary silicon phase
资金
- National Basic Research Program of China [2007CB714704]
- National Natural Science Foundation of China [50771073]
The effects of microstructural characteristics on the fatigue behavior in Al-Si-Mg alloy were investigated. The dislocation substructures of Al-Si-Mg alloy were observed by transmission electron microscopy ( TEM). Dislocation evolution process of alpha(Al) matrix with [011] orientation of Al-Si-Mg alloy specimens was observed during fatigue process under different stress amplitudes and cycles. The results indicate that dislocation structure is closely dependent on stress amplitudes, and the density of dislocation in failure specimens increases with increasing stress amplitudes. The results show that Mg(2)Si and secondary silicon phase could have a strong hindrance effect on the movement of dislocations during the fatigue process. The fatigue behavior is strongly dependent on the microstructure of material.
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