Microstructure and tensile properties of as-cast and as-aged Mg-6Al-4Zn alloys with Sn addition

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	Microstructure and tensile properties of as-cast and as-aged Mg-6Al-4Zn alloys with Sn addition
	X. G. Dong; J. W. Fu; J. Wang; Y. S. Yang
	2013
发表期刊	Materials & Design
ISSN	0261-3069
卷号	51 页码:567-574
摘要	The effect of 0-1.8 wt.% Sn addition on the microstructure and tensile properties of Mg-6Al-4Zn alloys was investigated. The results indicate that alpha-Mg dendrite is gradually refined with increasing Sn content and interdendritic Mg-21(Al, Zn)(17) and Mg17Al12 intermetallics can also be refined with 0.6 wt.% Sn addition. However, higher Sn addition leads to the coarsening and continuous distribution of the interdendritic intermetallics due to the stronger interdendritic segregation of Al and Zn. With the modified casting structure, the as-cast Mg-6Al-4Zn-0.6Sn alloy shows optimal ultimate tensile strength and elongation. After ageing treatment, the density of nano-scaled continuous precipitates into alpha-Mg matrix in all the Sn-containing alloys is enhanced markedly, which results in higher tensile strength due to enhanced ageing strengthening. Meanwhile, based on the microstructural analyses, alloy with 1.2 wt.% Sn can restrict forming discontinuous precipitates at grain boundary effectively. The as-aged Mg-6Al-4Zn-1.2Sn alloy possesses the excellent combination of strength and ductility. (c) 2013 Elsevier Ltd. All rights reserved.
部门归属	[dong, xuguang ; fu, junwei ; wang, jing ; yang, yuansheng] chinese acad sci, inst met res, shenyang 110016, peoples r china. ; yang, ys (reprint author), chinese acad sci, inst met res, shenyang 110016, peoples r china. ; ysyang@imr.ac.cn
关键词	Non-ferrous Metals And Alloys Mechanical Microstructure Zn-al Alloys Mechanical-properties Grain-refinement Magnesium Alloys Nd Behavior
URL	查看原文
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/71190
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	X. G. Dong,J. W. Fu,J. Wang,et al. Microstructure and tensile properties of as-cast and as-aged Mg-6Al-4Zn alloys with Sn addition[J]. Materials & Design,2013,51:567-574.
APA	X. G. Dong,J. W. Fu,J. Wang,&Y. S. Yang.(2013).Microstructure and tensile properties of as-cast and as-aged Mg-6Al-4Zn alloys with Sn addition.Materials & Design,51,567-574.
MLA	X. G. Dong,et al."Microstructure and tensile properties of as-cast and as-aged Mg-6Al-4Zn alloys with Sn addition".Materials & Design 51(2013):567-574.