Laser Welding of Dissimilar Metal Joint of 6061 Al Alloy and Al Matrix Composite-Reference-Cited by-同舟云学术

Laser Welding of Dissimilar Metal Joint of 6061 Al Alloy and Al Matrix Composite

Published:2019-05-02 Issue: Volume:2019 Page:1-6
ISSN:1687-8434
Container-title:Advances in Materials Science and Engineering
language:en
Short-container-title:Advances in Materials Science and Engineering

Author:

Dai Jun¹²^ORCID,Yu Banglong¹,Jiang Wei¹,Htun Hla Min³,Liu Zheng⁴^ORCID

Affiliation:

1. School of Automotive Engineering, Changshu Institute of Technology, Changshu 215500, China

2. Shanghai Key Laboratory of Materials Laser Processing and Modification, Shanghai Jiao Tong University, Shanghai 200240, China

3. Department of Mechanical Engineering, Mandalay Technological University, Mandalay 05072, Myanmar

4. School of Modern Technology, Suzhou Top Institute of Information Technology, Kunshan 215311, China

Abstract

In this paper, dissimilar metal joints of 6061 aluminum alloy and aluminum matrix composite material are investigated by laser welding. TiB2 particles were added into the lap joint. The welding process, microstructure, and the corrosion properties of welding joints are examined. The results demonstrate that the selected optimization process parameters are laser power 6 kW, welding speed 0.6 mm/s, pulse width 11.5 ms, and laser frequency 4.5 Hz. There are a few obvious pores in the molten pool. Al2Ti, Fe2Si, and Al0.5Fe3Si0.5 are present in the microstructure. During the welding process, some TiB2 particles are decomposed and reacted with molten Al. Other TiB2 particles are nucleated and solidified, and the excess TiB2 particles are pushed to the grain boundaries by molten Al. TiB2 particles are wetted well by molten matrix metal. The corrosion resistance of alloys in different conditions decreased in the following order: the weld beam >6061 Al > AMC.

Funder

National Natural Science Foundation of China

Publisher

Hindawi Limited

Subject

General Engineering,General Materials Science

Link

http://downloads.hindawi.com/journals/amse/2019/2359841.pdf

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