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Investigation on fatigue fracture behaviors of spot welded Q&P980 steel
B. Wang; Q. Q. Duan; G. Yao; J. C. Pang; X. W. Li; L. Wang; Z. F. Zhang
2014
Source PublicationInternational Journal of Fatigue
ISSN0142-1123
Volume66Pages:20-28
AbstractMicrostructural characterization, micro-hardness tests, tensile and fatigue tests of spot welded Q&P980 steel were performed using tensile-shear and cross-tension specimens. The hardness values of nugget and base material were measured to be 497 HV and 334 HV, respectively. It is found that the fatigue cracks in heat affected zone (HAZ) initiate at the interface between two sheets. The fatigue failure modes consist of the fracture along the circumference or along the direction of width for tensile-shear specimens and pullout or fracture along the direction of width for cross-tension specimens. It is also found that the fatigue properties of spot welded Q&P980 and DP780 specimens are approximately the same in the case of tensile-shear and cross-tension specimens. (C) 2014 Elsevier Ltd. All rights reserved.
description.department[wang, b. ; duan, q. q. ; yao, g. ; pang, j. c. ; zhang, z. f.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [wang, b. ; li, x. w.] northeastern univ, minist educ, key lab anisotropy & texture mat, shenyang 110819, peoples r china. [li, x. w.] northeastern univ, coll sci, inst mat phys & chem, shenyang 110819, peoples r china. [wang, l.] baoshan iron & steel co ltd, shanghai 201900, peoples r china. ; zhang, zf (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china. ; zhfzhang@imr.ac.cn
KeywordResistance Spot Weld q&P980 Steel Failure Mode Fatigue Properties Dual-phase Steel Crack-propagation Failure Mode Mechanical-properties Medium-carbon Low-alloy Strength Microstructure Tensile Sheet
URL查看原文
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/73397
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
B. Wang,Q. Q. Duan,G. Yao,et al. Investigation on fatigue fracture behaviors of spot welded Q&P980 steel[J]. International Journal of Fatigue,2014,66:20-28.
APA B. Wang.,Q. Q. Duan.,G. Yao.,J. C. Pang.,X. W. Li.,...&Z. F. Zhang.(2014).Investigation on fatigue fracture behaviors of spot welded Q&P980 steel.International Journal of Fatigue,66,20-28.
MLA B. Wang,et al."Investigation on fatigue fracture behaviors of spot welded Q&P980 steel".International Journal of Fatigue 66(2014):20-28.
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