Numerical Simulation of Al/Mg/Al Composite Plates Fabricated by Explosive Welding in One Stage

doi:10.3901/JME.2019.14.037

Abstract

Abstract: Explosive welding has characteristics of instantaneous, rapid and complicated reactions. The numerical simulation is important and effective method to research explosive welding. The method of explosive welding in one stage is used to fabricate the Al/Mg/Al composite plates. The SEM and EDS are adopted to research the morphology and the component of interface. The bonding interface presents a periodical wave and the diffusion phenomena is detected at interface. The bonding interface has serious plastic deformation because the serious pressure on the interface in the processes of explosive welding. The numerical simulation tests are used to research the distribution of temperature, stress and strain in the processes of explosive welding. The temperature at the interface is much more than the melting points of AZ31B and 6061. The results show that the bonding mechanism is interaction of pressure welding, diffusion welding and local melting welding. The research of explosive welding in one stage and the bonding mechanism of interface can be guided.

Key words: Al/Mg/Al composite plates, bonding mechanism, explosive welding, numerical simulation tests

CLC Number:

TG156

WEI Yi, WANG Yongzhen, WANG Wenxian, ZHANG Tingting, YAN Zhifeng. Numerical Simulation of Al/Mg/Al Composite Plates Fabricated by Explosive Welding in One Stage[J]. Journal of Mechanical Engineering, 2019, 55(14): 37-42.

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