Microstructural Evolution and Mechanical Behavior of Friction-Stir-Welded DP1180 Advanced Ultrahigh Strength Steel

doi:10.1007/s40195-019-00949-5

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	Microstructural Evolution and Mechanical Behavior of Friction-Stir-Welded DP1180 Advanced Ultrahigh Strength Steel
	Wang, Z. W.1,3; Xie, G. M.2; Wang, D.1; Zhang, H.1; Ni, D. R.1; Xue, P.1; Xiao, B. L.1; Ma, Z. Y.1
刊名	ACTA METALLURGICA SINICA-ENGLISH LETTERS
	2020
卷号	33 期号:1 页码:58-66
关键词	Advanced ultrahigh strength steel Friction stir welding Microstructure Mechanical behavior
ISSN号	1006-7191
DOI	10.1007/s40195-019-00949-5
通讯作者	Zhang, H.(haozhang@imr.ac.cn) ; Xue, P.(pxue@imr.ac.cn)
英文摘要	Friction stir lap welding of a DP1180 advanced ultrahigh strength steel was successfully carried out by using three welding tools with different pin lengths. The effects of the welding heat input and material flow on the microstructure evolution of the joints were analyzed in detail. The relationship between pin length and mechanical properties of lap joints was studied. The results showed that the peak temperatures of all joints exceeded A(c3), and martensite phases with similar morphologies were formed in the stir zones. These martensite retained good toughness due to the self-tempering effect. The formation of ferrite and tempered martensite was the main reason for the hardness reduction in heat-affected zone. The mechanical properties of the lap joints were determined by loading mode, features of lap interface and the joint defects. When the stir pin was inserted into the lower sheet with a depth of 0.4 mm, the lap joint exhibited the maximum tensile strength of 12.4 kN.
WOS研究方向	Metallurgy & Metallurgical Engineering
语种	英语
出版者	CHINESE ACAD SCIENCES, INST METAL RESEARCH
WOS记录号	WOS:000512013800005
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/137357]
专题	金属研究所_中国科学院金属研究所
通讯作者	Zhang, H.; Xue, P.
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Northeastern Univ, State Key Lab Rolling & Automat, Shenyang 110819, Peoples R China 3.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Wang, Z. W.,Xie, G. M.,Wang, D.,et al. Microstructural Evolution and Mechanical Behavior of Friction-Stir-Welded DP1180 Advanced Ultrahigh Strength Steel[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2020,33(1):58-66.
APA	Wang, Z. W..,Xie, G. M..,Wang, D..,Zhang, H..,Ni, D. R..,...&Ma, Z. Y..(2020).Microstructural Evolution and Mechanical Behavior of Friction-Stir-Welded DP1180 Advanced Ultrahigh Strength Steel.ACTA METALLURGICA SINICA-ENGLISH LETTERS,33(1),58-66.
MLA	Wang, Z. W.,et al."Microstructural Evolution and Mechanical Behavior of Friction-Stir-Welded DP1180 Advanced Ultrahigh Strength Steel".ACTA METALLURGICA SINICA-ENGLISH LETTERS 33.1(2020):58-66.