Microstructure and mechanical properties of friction spot welds of dissimilar AA5754 Al and AZ31 Mg alloys

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING

卷:590

Article

Suhuddin, U.¹  Fischer, V.^1,2  Kroeff, F.^1,2  dos Santos, J. F.¹ 

[1] Helmholtz Zentrum Geesthacht, Ctr Mat & Coastal Res, Inst Mat Res Mat Mech, Solid State Joining Proc Dept, D-21502 Geesthacht, Germany

[2] Univ Fed Rio Grande do Sul, Met Phys Lab, BR-90040060 Porto Alegre, RS, Brazil

关键词: Friction spot welding;    Dissimilar;    Intermetallics;    Diffusion;   

DOI  :  10.1016/j.msea.2013.10.057

来源: Elsevier

【 摘 要 】

In the present study, friction spot welding or refill friction stir spot welding was performed to consolidate dissimilar AA5754 Al and AZ31 Mg alloys. The intermetallic compounds of Al12Mg17 and Al3Mg2 were primarily found in the weld, distributed at the interface between the base materials and in the Al top sheet. The distribution of the intermetallic compounds and the interfacial area between the base materials affect the lap shear strength of the weld. It is concluded that the material flow induced by tool movement plays an important role in both the distribution of the intermetallic compounds and the interfacial area between the base materials. (C) 2013 Elsevier B.V. All rights reserved.

【 授权许可】

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