The thermal cycle during the dissimilar friction spot welding of aluminum and magnesium alloy

SCRIPTA MATERIALIA

卷:68

Article

Suhuddin, U. F. H.¹  Fischer, V.¹  dos Santos, J. F.¹ 

[1] Helmholtz Zentrum Geesthacht, Inst Mat Res, D-21502 Geesthacht, Germany

关键词: Friction spot welding;    Peak temperature;    Solidus temperature;    Intermetallic compound;    Diffusion;   

DOI  :  10.1016/j.scriptamat.2012.09.008

来源: Elsevier

【 摘 要 】

The thermal cycle during dissimilar friction spot welding of Al alloy AA5754 to Mg alloy AZ31 was measured by thermocouples located in the weld region. The results revealed that the weld is exposed to a non-equilibrium solidus temperature induced by rapid heating and cooling. Microstructural analyses showed that the grain structure development in the stir zone was affected by grain boundary diffusion, interfacial diffusion and dynamic recrystallization, which resulted in fine equiaxed grains of Al12Mg17 in the weld center. (C) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

【 授权许可】

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