Structure stability and mechanical properties of Mg-Al-based alloy modified with Y-rich and Ce-rich misch metals

	Structure stability and mechanical properties of Mg-Al-based alloy modified with Y-rich and Ce-rich misch metals
	Zhang JH ; Leng Z ; Liu SJ ; Zhang ML ; Meng JA ; Wu RZ
刊名	journal of alloys and compounds
	2011
卷号	509 期号:20 页码:l187-l193
关键词	RARE-EARTH MICROSTRUCTURAL ANALYSIS CREEP RESISTANCE MAGNESIUM BEHAVIOR CA ADDITIONS PHASES SR
ISSN号	0925-8388
通讯作者	zhang ml
中文摘要	mg-3.4 wt.% al-based alloy modified with 2.4 wt.% ce-rich and 0.3 wt.% y-rich misch metals was prepared by high-pressure die-casting. the microstructure, thermal stability of intermetallic phases and mechanical properties were investigated. the cross-section of test bar is divided into the fine skin region and the wide core region by a narrow band. two intermetallic phases al(11)re(3) and al(2)re, with the former being the dominant one, are mainly distributed at the interdendritic regions. the al(11)re(3) intermetallics possess high volume fraction, fine acicular/lamellar morphology and layered arrangement. it is suggests that each rare earth element has the individual preference for the above two al-re intermetallics. the thermal stability of al(11)re(3) is conditioned. it is basically stable at temperature up to 200 degrees c within 800 h, while almost all al(11)re(3) intermetallics transform to al(2)re at higher temperature of 450 degrees c for 800 h. the alloy exhibits remarkably improved tensile and compressive yield strengths at room temperature and 200 degrees c and they are the results of the reinforcement of dendrite boundaries with al(11)re(3) intermetallics, the fine dendritic arm spacing effect as well as the solid solution strengthening with various rare earth elements. (c) 2011 elsevier b.v. all rights reserved.
收录类别	SCI收录期刊论文
语种	英语
WOS记录号	WOS:000289462600001
公开日期	2012-06-11
内容类型	期刊论文
源URL	[http://ir.ciac.jl.cn/handle/322003/44624]
专题	长春应用化学研究所_长春应用化学研究所知识产出_期刊论文
推荐引用方式 GB/T 7714	Zhang JH,Leng Z,Liu SJ,et al. Structure stability and mechanical properties of Mg-Al-based alloy modified with Y-rich and Ce-rich misch metals[J]. journal of alloys and compounds,2011,509(20):l187-l193.
APA	Zhang JH,Leng Z,Liu SJ,Zhang ML,Meng JA,&Wu RZ.(2011).Structure stability and mechanical properties of Mg-Al-based alloy modified with Y-rich and Ce-rich misch metals.journal of alloys and compounds,509(20),l187-l193.
MLA	Zhang JH,et al."Structure stability and mechanical properties of Mg-Al-based alloy modified with Y-rich and Ce-rich misch metals".journal of alloys and compounds 509.20(2011):l187-l193.