Interface Bonding Mechanism of Mg/Al Alloy Explosive Welded

doi:10.3901/JME.2016.12.052

Abstract

Abstract: The AZ31B/6061 alloy composite plate is fabricated by explosive welding, as the base plate of AZ31B magnesium alloy material and the flyer plate of 6061 aluminum alloy material. The macro/micro-structure, elements diffusion and bonding strength of the composite bonding interface. The results show that the bonding interface presents a periodical wave; near the bonding interface the plastic deformation is serious and microstructure in the form of twin and recrystallization mainly; adiabatic shear bands are found on the AZ31B Mg alloy side adjacent to the interface by the direction of 45° and the microstructure is fine grain microstructure by recrystallization; the micro-hardness distribution characteristics is decrease with the increase of distance from the bonding interface both of AZ31B and 6061 plate; the interface bonding strength is 193.3 MPa and the bonding mechanism of pressure welding, diffusion welding and local melting welding.

Key words: explosive welding, interface bonding mechanism, Mg/Al alloy

CLC Number:

TG392

ZHANG Tingting, WANG Wenxian, YUAN Xiaodan, LIU Ruifeng, XIE Ruishan. Interface Bonding Mechanism of Mg/Al Alloy Explosive Welded[J]. Journal of Mechanical Engineering, 2016, 52(12): 52-58.

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