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

doi:10.1007/s40195-019-00949-5

IMR OpenIR

	Microstructural Evolution and Mechanical Behavior of Friction-Stir-Welded DP1180 Advanced Ultrahigh Strength Steel
	Wang, Z. W.1,2; Xie, G. M.3; Wang, D.1; Zhang, H.1; Ni, D. R.1; Xue, P.1; Xiao, B. L.1; Ma, Z. Y.1
通讯作者	Zhang, H.(haozhang@imr.ac.cn) ; Xue, P.(pxue@imr.ac.cn)
	2020
发表期刊	ACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN	1006-7191
卷号	33 期号:1 页码:58-66
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.
关键词	Advanced ultrahigh strength steel Friction stir welding Microstructure Mechanical behavior
DOI	10.1007/s40195-019-00949-5
收录类别	SCI
语种	英语
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000512013800005
出版者	CHINESE ACAD SCIENCES, INST METAL RESEARCH
引用统计	被引频次：14[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/321006/137358
专题	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.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Northeastern Univ, State Key Lab Rolling & Automat, Shenyang 110819, 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.