Dynamic crack propagation behavior of the Mg-Li alloys under high-speed impact loading

IMR OpenIR

	Dynamic crack propagation behavior of the Mg-Li alloys under high-speed impact loading
	Sha, GY ; Xu, YB ; Han, EH
通讯作者	Sha, GY(gysha@imr.ac.cn)
	2005
发表期刊	MAGNESIUM - SCIENCE, TECHNOLOGY AND APPLICATIONS
ISSN	0255-5476
卷号	488-489 页码:717-720
摘要	The dynamic experiments for the Mg-Li alloys with single phase structure were carried out using the Hopkinson pressure bar. The dynamic crack propagation behavior and fracture mechanism of the alloys were investigated. The results show that the dynamic crack propagation is a deceleration process for the Mg-Li alloys under high loading rate. The fastest crack propagation velocity for Mg-3.3Li alloy is 1253.37m/s, and 935.36m/s for Mg-14Li alloy. Observations of the fracture by SEM reveal that the dynamic fracture surface for Mg-3.3Li alloy mainly appears to be brittle fracture along grain boundaries. Whereas, the Mg-14Li alloy is ductile fracture mode under high loading rate. The main reason for these may be the transformation of hep -> bcc structure and the precipitation of the MgLi2Al and AlLi, as increase of Li in Mg-Li alloy.
关键词	Mg-Li alloy impact loading crack propagation fracture mechanism
收录类别	SCI
语种	英语
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000230390900162
出版者	TRANS TECH PUBLICATIONS LTD
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/83167
通讯作者	Sha, GY
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Shenyang Inst Aeronaut Engn, Dept Mat Engn, Shenyang 110034, Peoples R China
推荐引用方式 GB/T 7714	Sha, GY,Xu, YB,Han, EH. Dynamic crack propagation behavior of the Mg-Li alloys under high-speed impact loading[J]. MAGNESIUM - SCIENCE, TECHNOLOGY AND APPLICATIONS,2005,488-489:717-720.
APA	Sha, GY,Xu, YB,&Han, EH.(2005).Dynamic crack propagation behavior of the Mg-Li alloys under high-speed impact loading.MAGNESIUM - SCIENCE, TECHNOLOGY AND APPLICATIONS,488-489,717-720.
MLA	Sha, GY,et al."Dynamic crack propagation behavior of the Mg-Li alloys under high-speed impact loading".MAGNESIUM - SCIENCE, TECHNOLOGY AND APPLICATIONS 488-489(2005):717-720.