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In vitro degradation behaviour of a friction stir processed magnesium alloy
M Bobby Kannan1, W Dietzel, R Zettler
1Discipline of Chemical Engineering, School of Engineering and Physical Sciences, James Cook University, Townsville, QLD 4811, Australia. bobby.mathan@jcu.edu.au
Abstract:
In this study, the in vitro degradation behaviour of a friction stir processed AZ31 magnesium alloy was investigated. Electrochemical experiments in simulated body fluid suggest that friction stir processing marginally enhances the degradation resistance of the alloy, which could be attributed to the dissolution of secondary phase particles. Homogenisation of the microstructure reduces galvanic corrosion. It is envisaged that the beneficial effect would be more pronounced for magnesium alloys which contain high volume fraction of galvanic corrosion inducing secondary phase particles.
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