Microstructure and mechanical properties of resistance spot welded dissimilar thickness DP780/DP600 dual-phase steel joints

被引：48

作者：

Zhang, Hongqiang ^{[1
]}

Wei, Ajuan ^{[1
]}

Qiu, Xiaoming ^{[1
]}

Chen, Jianhe ^{[2
]}

机构：

[1] Jilin Univ, Sch Mat Sci & Engn, Minist Educ, Key Lab Automobile Mat, Changchun 130025, Peoples R China

[2] Sanyou Automobile Parts Mfg Co Ltd, Changchun 130022, Peoples R China

来源：

MATERIALS & DESIGN | 2014年 / 54卷

关键词：

Ferrous metals and alloys; Welding; Microstructure; BEHAVIOR; DEFORMATION; FRACTURE; SINGLE; SIZE;

D O I：

10.1016/j.matdes.2013.08.027

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this study, resistance spot welding (RSW) experiments were performed in order to evaluate the microstructure and mechanical properties of single-lap joints between DP780 and DP600. The results show that the weld joints consist of three regions including base metal (BM), heat affected zone (HAZ) and fusion zone (FZ). The grain size and martensite volume fractions increase in the order of BM, HAZ and FZ. The hardness in the FZ is significantly higher than hardness of base metals. Tensile properties of the joints were described in terms of the failure modes and static load-carrying capabilities. Two distinct failure modes were observed during the tensile shear test of the joints: interfacial failure (IF) and pullout failure (PF). The FZ size plays a dominate role in failure modes of the joints. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：443 / 449

页数：7

共 20 条

[1]

[Anonymous], 2009, Advanced High Strength Steel (AHSS) Application Guidelines V4.1

[2] Deformation behaviour of spot-welded high strength steels for automotive applications [J].

Brauser, S. ;

Pepke, L. A. ;

Weber, G. ;

Rethmeier, M. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2010, 527 (26) :7099-7108

[3]

China National Standard, 2008, 25612008 GBT

[4] Evaluation of weldability for resistance spot welded single-lap joint between GA780DP and hot-stamped 22MnB5 steel sheets [J].

Choi, Hong-Seok ;

Park, Geun-Hwan ;

Lim, Woo-Seung ;

Kim, Byung-min .

JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY, 2011, 25 (06) :1543-1550

[5] INFLUENCE OF MARTENSITE COMPOSITION AND CONTENT ON PROPERTIES OF DUAL PHASE STEELS [J].

DAVIES, RG .

METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1978, 9 (05) :671-679

[6] The effect of welding parameters on fracture toughness of resistance spot-welded galvanized DP600 automotive steel sheets [J].

Hayat, Fatih ;

Sevim, Ibrahim .

INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY, 2012, 58 (9-12) :1043-1050

[7] Influence of microstructure and weld size on the mechanical behaviour of dissimilar AHSS resistance spot welds [J].

Hernandez, V. H. Baltazar ;

Kuntz, M. L. ;

Khan, M. I. ;

Zhou, Y. .

SCIENCE AND TECHNOLOGY OF WELDING AND JOINING, 2008, 13 (08) :769-776

[8]

Japanese Industrial Standard, 1999, Z31391978 JIS

[9] Microstructure and mechanical properties of resistance spot welded advanced high strength steels [J].

Khan, M. I. ;

Kuntz, M. L. ;

Biro, E. ;

Zhou, Y. .

MATERIALS TRANSACTIONS, 2008, 49 (07) :1629-1637

[10] Welding behaviour, microstructure and mechanical properties of dissimilar resistance spot welds between galvannealed HSLA350 and DP600 steels [J].

Khan, M. S. ;

Bhole, S. D. ;

Chen, D. L. ;

Biro, E. ;

Boudreau, G. ;

van Deventer, J. .

SCIENCE AND TECHNOLOGY OF WELDING AND JOINING, 2009, 14 (07) :616-625

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