RELATIONSHIP OF COMPOSITIONS, PHASE CONSTITUENTS AND SOLIDIFICATION PATHS OF CASTING Mg-Al-Zn ALLOYS

IMR OpenIR

	RELATIONSHIP OF COMPOSITIONS, PHASE CONSTITUENTS AND SOLIDIFICATION PATHS OF CASTING Mg-Al-Zn ALLOYS
	Xie Yu 1; Zhang Yan 2; Chen Rongshi 1; Han Enhou 1
通讯作者	Chen Rongshi(rongshichen@yahoo.com)
	2009-11-11
发表期刊	ACTA METALLURGICA SINICA
ISSN	0412-1961
卷号	45 期号:11 页码:1396-1401
摘要	Casting Mg-Al-Zn alloys are promising for the automotive components loaded under both high strength and high ductility, as well as under high temperatures. The relationship of compositions, phase constituents and solidification paths of casting Mg-Al-Zn alloys were investigated by SEM/EDS, XRD and thermodynamic calculations. It is shown that the phase constituents of Mg-Al-Zn alloys are related to Zn/Al ratio; with the Zn/Al ratio increasing, the secondary phase gamma-Mg(17)Al(12). It is gradually replaced by phi-Mg(21)(Zn, Al)(17) and eventually disappears completely. The phase constituents and solidification paths of the alloys under various conditions, including equilibrium, Scheil and permanent mould casting, were examined by thermodynamic calculation software Pandat with the availability of thermodynamic description of Mg-Al-Zn ternary system. The practical casting process deviates from the equilibrium; however, the practical phase constituents of the experimental alloys except ZA65 can be predicted by the Scheil model. Because of no considering the peritectic reaction in which solid participates as reactant, the Scheil model can not correctly predict the phase constituents of ZA65 alloy under permanent mould casting condition.
关键词	Mg-Al-Zn alloy phase equilibrium thermodynamics microstructure solidification path
资助者	National Natural Science Foundation of China ; National Key Basic Research and Development Program of China
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[50574086] ; National Key Basic Research and Development Program of China[2007CB613704]
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000272502600019
出版者	SCIENCE PRESS
引用统计	被引频次：2[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/98446
专题	中国科学院金属研究所
通讯作者	Chen Rongshi
作者单位	1.Chinese Acad Sci, State Key Lab Corros & Protect, Inst Met Res, Shenyang 110016, Peoples R China 2.59 Inst China Ordnance Ind, Chongqing 400039, Peoples R China
推荐引用方式 GB/T 7714	Xie Yu,Zhang Yan,Chen Rongshi,et al. RELATIONSHIP OF COMPOSITIONS, PHASE CONSTITUENTS AND SOLIDIFICATION PATHS OF CASTING Mg-Al-Zn ALLOYS[J]. ACTA METALLURGICA SINICA,2009,45(11):1396-1401.
APA	Xie Yu,Zhang Yan,Chen Rongshi,&Han Enhou.(2009).RELATIONSHIP OF COMPOSITIONS, PHASE CONSTITUENTS AND SOLIDIFICATION PATHS OF CASTING Mg-Al-Zn ALLOYS.ACTA METALLURGICA SINICA,45(11),1396-1401.
MLA	Xie Yu,et al."RELATIONSHIP OF COMPOSITIONS, PHASE CONSTITUENTS AND SOLIDIFICATION PATHS OF CASTING Mg-Al-Zn ALLOYS".ACTA METALLURGICA SINICA 45.11(2009):1396-1401.