| Summary: | Cold spray (CS) deposition, a relatively new technique, deposits powder particles onto substrates at low process temperatures by means of kinetic energy. It is primarily used for part repairs, fabrication of thin and thick coatings, and more recently additive manufacturing. For the repair of parts used in corrosive environments it is important to use similar materials. Moreover, assuring good bonding of the deposited material to the substrate is essential. The exact
mechanisms for bonding in CS, however, have not been clearly determined. In this work, 6061 aluminum alloy powders with or without pre-heat treatment were deposited onto a 6061 substrate to investigate the deformation characteristics, microstructural evolution and metallurgical bonding in the splat and the substrate.
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