Microstructures and Mechanical Properties of Aluminum Coating Produced by Friction Stir Processing

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Abstract:

This Four passes processing to the thermal spray aluminum coating on the aluminum alloy surface,based on friction stir processing (FSP). Applications SEM, EDS and micro hardness testing to analysis the coatings that have been processed and haven't been processed. The results show that , after the friction stir processing,dense ultrafine grained aluminum with the sizes less than 200nm is obtain ,and replace original laminated and porous coating . Fusion utilizes between the coating and the substrate, the gap between coating and substrate have disappear. The alloy elements in the substrate diffuse to the coating.

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612-615

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March 2015

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© 2015 Trans Tech Publications Ltd. All Rights Reserved

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