Mg/Al REACTION AND MECHANICAL PROPERTIES OF Al ALLOY/Mg ALLOY FRICTION STIR WELDING JOINTS

doi:10.3724/SP.J.1037.2009.00802

IMR OpenIR

	Mg/Al REACTION AND MECHANICAL PROPERTIES OF Al ALLOY/Mg ALLOY FRICTION STIR WELDING JOINTS
	Wang Dong 1; Liu Jie 2; Xia Bolue 1; Ma Zongyi 1
通讯作者	Ma Zongyi(zyma@imr.ac.cn)
	2010-05-11
发表期刊	ACTA METALLURGICA SINICA
ISSN	0412-1961
卷号	46 期号:5 页码:589-594
摘要	Mg alloys are increasingly used in aerospace, aircraft and automotives structures due to the low density and good damping properties, especially, the welding of Mg alloy to Al alloys is of practical importance for widening the application of Mg alloys. Although friction stir welding (FSW) has been used to join Mg and Al alloys, defect free joints are achieved only in the thin plate (less than 4 mm). In this paper, three ways of FSW of 6 mm thick 6061-T651 Al alloy and AZ31 Mg alloy plates, offsetting the pin to the seam between the two plates (M4A4), to the Mg alloy side 2 mm (M6A2) and to the Al alloy side 2 mm (A6M2), were studied. The aim is to examine the effects of the relative position between tool and plate on the microstructure and mechanical properties of FSW Mg/Al alloys joint. SEM and XRD analyses revealed the formations of intermetallics Mg(17)Al(12) and voids in the interface between Mg and Al alloy plates in the three FSW samples. The voids are resulted from the melting and subsequent solidification of eutectic. In the M4A4 and M6A2 samples, some Al are stirred into the Mg alloy side during FSW, forming the Mg(17)Al(12), whereas in the A6M2 sample, sonic Mg stirred into the Al alloy side are also transformed to the Mg(17)Al(12). Some fine pores are observed around the Mg(17)Al(12). The hardness of the nugget zone exhibits a slight increase due to the formation of a small amount of Mg(17)Al(12). The intermetallics and pores at the jointed interface decrease the strength of the joints significantly.
关键词	friction stir welding dissimilar alloy welding 6061 Al alloy AZ31 Mg alloy microstructure
资助者	National Outstanding Young Scientist Foundation ; Chinese Academy of Sciences
DOI	10.3724/SP.J.1037.2009.00802
收录类别	SCI
语种	英语
资助项目	National Outstanding Young Scientist Foundation[50525103] ; Chinese Academy of Sciences
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000278475200011
出版者	SCIENCE CHINA PRESS
引用统计	被引频次：13[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/321006/103043
专题	中国科学院金属研究所
通讯作者	Ma Zongyi
作者单位	1.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Aviat Ind Corp China, Shenyang Liming Corp, Shenyang 110043, Peoples R China
推荐引用方式 GB/T 7714	Wang Dong,Liu Jie,Xia Bolue,et al. Mg/Al REACTION AND MECHANICAL PROPERTIES OF Al ALLOY/Mg ALLOY FRICTION STIR WELDING JOINTS[J]. ACTA METALLURGICA SINICA,2010,46(5):589-594.
APA	Wang Dong,Liu Jie,Xia Bolue,&Ma Zongyi.(2010).Mg/Al REACTION AND MECHANICAL PROPERTIES OF Al ALLOY/Mg ALLOY FRICTION STIR WELDING JOINTS.ACTA METALLURGICA SINICA,46(5),589-594.
MLA	Wang Dong,et al."Mg/Al REACTION AND MECHANICAL PROPERTIES OF Al ALLOY/Mg ALLOY FRICTION STIR WELDING JOINTS".ACTA METALLURGICA SINICA 46.5(2010):589-594.