Microstructure and mechanical properties of melt-conditioned high-pressure die-cast Mg-Al-Ca alloy

CORC > 金属研究所 > 中国科学院金属研究所

	Microstructure and mechanical properties of melt-conditioned high-pressure die-cast Mg-Al-Ca alloy
	S. M. Liang ; H. W. Zhang ; M. X. Xia ; R. S. Chen ; E. H. Han ; Z. Y. Fan
刊名	Transactions of Nonferrous Metals Society of China
	2010
卷号	20 期号:7 页码:1205-1211
关键词	Mg alloy Mg-Al-Ca alloy melt conditioning grain refinement solidification die casting az91d magnesium alloy behavior temperature additions sb si
ISSN号	1003-6326
中文摘要	A new shape casting process, melt-conditioned high-pressure die-casting (MC-HPDC) was developed. In this process, liquid metal was conditioned under intensively forced convection provided by melt conditioning with advanced shear technology (MCAST) unit before being transferred to a conventional cold chamber high-pressure die-casting (HPDC) machine for shape casting. The effect of melt conditioning was investigated, which was carried out both above and below the liquidus of the alloy, on the microstructure and properties of a Mg-Al-Ca alloy (AZ91D+2%Ca (mass fraction), named as AZX912). The results show that many coarse externally-solidified crystals (ESCs) can be observed in the centre of conventional HPDC samples, and hot tearing occurs at the inter-dendritic region because of the lack of feeding. With the melting conditioning, the MC-HPDC samples not only have considerably refined size of ESCs but also have significantly reduced cast defects, thus provide superior mechanical properties to conventional HPDC castings. The solidification behaviour of the alloy under different processing routes was also discussed.
原文出处	://WOS:000280747200005
公开日期	2012-04-13
内容类型	期刊论文
源URL	[http://210.72.142.130/handle/321006/31253]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	S. M. Liang,H. W. Zhang,M. X. Xia,et al. Microstructure and mechanical properties of melt-conditioned high-pressure die-cast Mg-Al-Ca alloy[J]. Transactions of Nonferrous Metals Society of China,2010,20(7):1205-1211.
APA	S. M. Liang,H. W. Zhang,M. X. Xia,R. S. Chen,E. H. Han,&Z. Y. Fan.(2010).Microstructure and mechanical properties of melt-conditioned high-pressure die-cast Mg-Al-Ca alloy.Transactions of Nonferrous Metals Society of China,20(7),1205-1211.
MLA	S. M. Liang,et al."Microstructure and mechanical properties of melt-conditioned high-pressure die-cast Mg-Al-Ca alloy".Transactions of Nonferrous Metals Society of China 20.7(2010):1205-1211.