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Parameter Optimization of Gas Tungsten-Arc Repair Welding Technique in Mg-6Gd-3Y-0.5Zr Alloy
Meng, D. H.; Zhou, B.; Wu, D.; Ma, Y. Q.; Chen, R. S.; Li, P. J.
2019-04-01
Source PublicationINTERNATIONAL JOURNAL OF METALCASTING
ISSN1939-5981
Volume13Issue:2Pages:345-353
AbstractThe 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.
Keywordgas tungsten-arc (TIG) repair welding Mg-6Gd-3Y-0 5Zr processing parameters optimization mechanical properties
Indexed BySCI
Language英语
WOS IDWOS:000463755600012
PublisherSPRINGER INTERNATIONAL PUBLISHING AG
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/81215
Collection中国科学院金属研究所
Recommended Citation
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.
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