Diffusion Bonding between AZ31 Magnesium Alloy and 7075 Aluminum Alloy

Zhi Tong Chen; Fei Lin; Jie Li; Fei Wang; Qing Sen Meng

doi:10.4028/www.scientific.net/AMM.618.150

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 618Diffusion Bonding between AZ31 Magnesium Alloy and...

Diffusion Bonding between AZ31 Magnesium Alloy and 7075 Aluminum Alloy

Abstract:

A study on vacuum diffusion bonding between as-extruded AZ31 magnesium alloy and 7075 aluminum alloy was carried out according to atomic diffusion theory. Recrystallization annealing was used for grain refinement of AZ31 magnesium alloy and 7075 aluminum alloy before the diffusion welding. The quality of the bonding joints was checked by shear test, micro-hardness test and microstructure analysis. Experimental results showed that the welding temperature and holding time have a great effect on the joint shear strength. The maximum of shear strength was 38.41MPa under the temperature of 470°C and the holding time of 60min. The result of micro-hardness measurement showed that the micro-hardness of welded joints was maximum. Three kinds of intermetallic compounds, Mg₂A1₃, MgAl and Mg_l7Al₁₂, formed at the interfacial transition zone at 470°C.

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Periodical:

Applied Mechanics and Materials (Volume 618)

Pages:

150-153

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.618.150

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Online since:

August 2014

Authors:

Zhi Tong Chen, Fei Lin*, Jie Li, Fei Wang, Qing Sen Meng

Keywords:

7075 Aluminum Alloy, AZ31 Magnesium Alloy, Grain Refinement, Shearing Strength, Vacuum Diffusion Bonding

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