Mechanical and metallurgical bonding in friction stir welding joint of steel-aluminum dissimilar materials

被引：0

作者：

Lin, Jian ^{[1
]}

Zhao, Haifeng ^{[1
]}

Lei, Yongping ^{[1
]}

Zhao, Chong ^{[1
]}

Wu, Zhongwei ^{[1
]}

机构：

[1] College of Materials Science and Engineering, Beijing University of Technology, Beijing

来源：

Jixie Gongcheng Xuebao/Journal of Mechanical Engineering | 2015年 / 51卷 / 16期

关键词：

Failure mode; Friction stir welding; Interface layer; Joint strength; Steel/Al dissimilar materials joint;

D O I：

10.3901/JME.2015.16.106

中图分类号：

学科分类号：

摘要：

In order to save the fuel consumption and reduce the pollution, aluminum alloy is one of the most acceptable materials for weight reduction in vehicle body assembly. However, how to join aluminum alloys and steels is an unsolved problem. Friction stir welding is tried to join aluminum alloy and zinc coated steel. The steel-aluminum dissimilar materials lap joints are manufactured by friction stir welding in two ways. One is that the pin is pressed into the steel material to cause a mechanical and metallurgical bonding between the dissimilar materials. Another is that only a metallurgical bonding between the dissimilar materials is formed by the heat flow from the friction of the tool and the aluminum material. The lap joints are shear tested and the interface between steel and aluminum materials are observed. It is shown that the zinc coating on the steel plate has an obvious effect on the joint forming between steel and aluminum and there is an obvious difference in shear strength and failure mode between metallurgical and mechanical-metallurgical bonding joints. In mechanical-, metallurgical bonding joint, the interface layer between steel and aluminum materials is thick and composed of aluminum, zinc phase while in metallurgical bonding joint, the thickness of interface layer is about 2-3 μm and it is mainly composed of the intermetallic compound of Fe-Al. And the factors influencing joint strength and failure mode of steel-aluminum friction stir welding joint are also investigated. ©, 2015, Journal of Mechanical Engineering. All right reserved.

引用

页码：106 / 112

页数：6

共 11 条

[1]

Bened Y.K.J.C., Light metals in automotive applications, Light Metal Age, 10, 1, pp. 34-35, (2000)

[2]

Zhang Y., Zhu P., Chen G., Et al., The lightweight design of bonnet in auto-body based on finite element method, Journal of Shanghai Jiaotong University, 40, 1, pp. 163-166, (2006)

[3]

Long J., Lan F., Chen J., New technology of lightweight and steel-aluminum hybrid structure car body, Chinese Journal of Mechanical Engineering, 44, 6, pp. 27-35, (2008)

[4]

Zhong C., Yu B., Key technology for skeleton structure of automobile body with steel and aluminum intergration and latest development, Machinery Design & Manufacture, 1, pp. 251-253, (2012)

[5]

Xiong J.T., Li J.L., Qian J.W., Et al., High strength lap joint of aluminium and stainless steels fabricated by friction stir welding with cutting pin, Science and Technology of Welding and Joining, 17, 3, pp. 196-201, (2012)

[6]

Zhang G.F., Su W., Zhang J.X., Et al., Friction stir brazing: A novel process for fabricating Al/steel layered composite and for dissimilar joining of Al to steel, Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, 42, 9, pp. 2850-2861, (2011)

[7]

Wang X., Shen Z., Zhang Z., Study of friction-stir-welded lap joint of aluminum and zinc-coated steel, Transactions of the China Welding Institute, 32, 12, pp. 97-100, (2011)

[8]

Bang H., Bang H., Jeon G., Et al., Gas tungsten arc welding assisted hybrid friction stir welding of dissimilar materials Al6061-T6 aluminum alloy and STS304 stainless steel, Materials and Design, 37, pp. 48-55, (2012)

[9]

Tanaka K., Kumagai M., Yoshida H., Dissimilar joining of aluminum alloy and steel sheets by friction stir spot welding, Journal of Japan Institute of Light Metals, 56, 6, pp. 317-322, (2006)

[10]

Huang P., Lu Z., Gao W., Et al., Low energy welding technology in bonding steel with aluminum, Journal of Mechanical Engineering, 45, 11, pp. 295-299, (2009)

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