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

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	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
	2010
发表期刊	Transactions of Nonferrous Metals Society of China
ISSN	1003-6326
卷号	20 期号:7 页码:1205-1211
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.
部门归属	[liang song-mao; chen rong-shi; han en-hou] chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china. [liang song-mao; zhang hua-wei; xia ming-xu; fan zhong-yun] brunel univ, bcast, uxbridge ub8 3ph, middx, england. [liang song-mao] chinese acad sci, grad sch, beijing 100049, peoples r china.;han, eh (reprint author), chinese acad sci, inst met res, state key lab corros & protect, shenyang 110016, peoples r china;ehhan@imr.ac.cn zhongyun.fan@brunel.ac.uk
关键词	Mg Alloy Mg-al-ca Alloy Melt Conditioning Grain Refinement Solidification Die Casting Az91d Magnesium Alloy Behavior Temperature Additions Sb Si
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WOS记录号	WOS:000280747200005
引用统计	被引频次：8[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/321006/31253
专题	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.