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Improving mechanical properties of friction-stir-spot-welded advanced ultra-high-strength steel with additional water cooling
Wang, Z. W.; Ma, G. N.; Yu, B. H.; Xue, P.; Xie, G. M.; Zhang, H.; Ni, D. R.; Xiao, B. L.; Ma, Z. Y.
2019-12-19
Source PublicationSCIENCE AND TECHNOLOGY OF WELDING AND JOINING
ISSN1362-1718
Abstract1.2 mm thick DP1180 advanced ultra-high-strength steel were successfully friction stir spot welded (FSSWed) with additional water cooling. No hook defect and obvious keyhole were observed in the spot joints when using a specially designed WC-Co tool. Softening of the heat-affected zone was substantially suppressed and the lap shear strength of the joints was obviously enhanced via water cooling. The enhanced strength of water-cooled joints was attributed to the grain refinement, the formation of the untempered martensite and the effective restraint of tool softening underwater. Accordingly, the maximum lap shear strength of 17.9 kN was obtained for the water-cooled joint. This study provides a novel strategy to enhance the strength of the FSSW joints for high-strength steels.
KeywordFriction stir spot welding forced water cooling ultra-high-strength steel microstructure mechanical property
Indexed BySCI
Language英语
WOS IDWOS:000504366100001
PublisherTAYLOR & FRANCIS LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/80552
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Wang, Z. W.,Ma, G. N.,Yu, B. H.,et al. Improving mechanical properties of friction-stir-spot-welded advanced ultra-high-strength steel with additional water cooling[J]. SCIENCE AND TECHNOLOGY OF WELDING AND JOINING,2019.
APA Wang, Z. W..,Ma, G. N..,Yu, B. H..,Xue, P..,Xie, G. M..,...&Ma, Z. Y..(2019).Improving mechanical properties of friction-stir-spot-welded advanced ultra-high-strength steel with additional water cooling.SCIENCE AND TECHNOLOGY OF WELDING AND JOINING.
MLA Wang, Z. W.,et al."Improving mechanical properties of friction-stir-spot-welded advanced ultra-high-strength steel with additional water cooling".SCIENCE AND TECHNOLOGY OF WELDING AND JOINING (2019).
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