Parameter Optimization of Gas Tungsten-Arc Repair Welding Technique in Mg-6Gd-3Y-0.5Zr Alloy

doi:10.1007/s40962-018-0257-9

IMR OpenIR

	Parameter Optimization of Gas Tungsten-Arc Repair Welding Technique in Mg-6Gd-3Y-0.5Zr Alloy
	Meng, D. H.1,2; Zhou, B.3,4; Wu, D.3; Ma, Y. Q.3; Chen, R. S.3; Li, P. J.1
通讯作者	Meng, D. H.()
	2019-04-01
发表期刊	INTERNATIONAL JOURNAL OF METALCASTING
ISSN	1939-5981
卷号	13 期号:2 页码:345-353
摘要	The feasibility of gas tungsten-arc repair welding was studied in Mg-6Gd-3Y-0.5Zr alloy. The processing parameters were optimized by sequential experiments including comparative study to find proper filler material and the type of welding groove by butt welding, and the investigation of influence of preliminary heating, area of repair welding, post-weld heat treatment and thickness of welding plate on the mechanical properties of welded joints. In addition, the analysis of microstructure and tensile properties of Mg-6Gd-3Y-0.5Zr alloy was performed for comparison with welded joints. The results showed that the microstructure in as-cast condition was characterized by equiaxial -Mg and eutectic phase, including Mg-24(Gd,Y)(5) and Mg-5(Gd,Y) phase. The strength was improved greatly after T6 treatment, while the ductility was remarkably decreased. The filler material and the type of welding groove were chosen as Mg-6Gd-3Y-0.5Zr alloy and V-type, respectively. The optimal process parameters of repair welding consisted of preliminary heating, T6 treatment after welding, 4mm-thickness plates and welding area with the diameter of phi 15mm. The tensile strength of welded joints reached the maximum value up to 295MPa, equivalent to 99.7% of base material.
关键词	gas tungsten-arc (TIG) repair welding Mg-6Gd-3Y-0 5Zr processing parameters optimization mechanical properties
资助者	National Science and Technology Major Project of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China (NSFC) ; National Basic Research Program of China (973 Program)
DOI	10.1007/s40962-018-0257-9
收录类别	SCI
语种	英语
资助项目	National Science and Technology Major Project of China[2017ZX04014001] ; National Key Research and Development Program of China[2016YFB0301104] ; National Natural Science Foundation of China (NSFC)[51301173] ; National Natural Science Foundation of China (NSFC)[51531002] ; National Natural Science Foundation of China (NSFC)[51601193] ; National Natural Science Foundation of China (NSFC)[51701218] ; National Basic Research Program of China (973 Program)[2013CB632202]
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000463755600012
出版者	SPRINGER INTERNATIONAL PUBLISHING AG
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/321006/132767
专题	中国科学院金属研究所
通讯作者	Meng, D. H.
作者单位	1.Tsinghua Univ, Dept Mech Engn, Beijing, Peoples R China 2.Beijing Inst Astronaut Syst Engn, Beijing, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Grp Magnesium Alloys & Their Applicat, Shenyang, Liaoning, Peoples R China 4.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei, Anhui, Peoples R China
推荐引用方式 GB/T 7714	Meng, D. H.,Zhou, B.,Wu, D.,et al. Parameter Optimization of Gas Tungsten-Arc Repair Welding Technique in Mg-6Gd-3Y-0.5Zr Alloy[J]. INTERNATIONAL JOURNAL OF METALCASTING,2019,13(2):345-353.
APA	Meng, D. H.,Zhou, B.,Wu, D.,Ma, Y. Q.,Chen, R. S.,&Li, P. J..(2019).Parameter Optimization of Gas Tungsten-Arc Repair Welding Technique in Mg-6Gd-3Y-0.5Zr Alloy.INTERNATIONAL JOURNAL OF METALCASTING,13(2),345-353.
MLA	Meng, D. H.,et al."Parameter Optimization of Gas Tungsten-Arc Repair Welding Technique in Mg-6Gd-3Y-0.5Zr Alloy".INTERNATIONAL JOURNAL OF METALCASTING 13.2(2019):345-353.