Dissimilar friction stir lap welding of magnesium to aluminum using plasma electrolytic oxidation interlayer

Joining the die-cast non-combustible magnesium alloy AMX602 to the die-cast aluminum alloy ADC12 via friction stir lap welding (FSLW) was investigated. The aluminum alloy on the top can more easily form a sound dissimilar joint than that on the bottom. Strong dissimilar joints were achieved after th...

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Bibliographic Details
Published in:Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2018-01, Vol.711, p.109-118
Main Authors: Gao, Y., Morisada, Y., Fujii, H., Liao, J.
Format: Article
Language:English
Subjects:
Aluminum alloys
Aluminum base alloys
Flammability
Friction stir lap welding
Friction stir welding
Interlayers
Intermetallic compounds
Lap welding
Magnesium base alloys
Mg/Al dissimilar joint
Microstructure
Oxidation
Plasma electrolytic oxidation
Reaction time
Reduction (electrolytic)
Studies
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Summary:Joining the die-cast non-combustible magnesium alloy AMX602 to the die-cast aluminum alloy ADC12 via friction stir lap welding (FSLW) was investigated. The aluminum alloy on the top can more easily form a sound dissimilar joint than that on the bottom. Strong dissimilar joints were achieved after the magnesium alloy was subjected to a plasma electrolytic oxidation treatment. After the welding process, the plasma electrolytic oxidation interlayer was stirred and flowed into the aluminum alloy side. The growth of the intermetallic compound was restrained by the plasma electrolytic oxidation interlayer by reducing the reaction time of the magnesium alloy and aluminum alloy.
ISSN:0921-5093
1873-4936
DOI:10.1016/j.msea.2017.11.034