Abstract
Friction surfacing is a solid-state metal deposition technology, which has potential application in additive manufacturing. In this paper, multilayer of AA6061 deposition was fabricated on 316L steel plate by friction surfacing. The morphology, temperature field, axial force, microstructure, and mechanical properties of the deposition were analyzed. It was found that with the increase of substrate surface roughness, the thickness of deposition increased, the width decreased, and the bonding strength increased. The grain size increased and the hardness decreased from the top layer to the bottom layer of the deposition as a result of reheating by subsequent layer surfacing process. The bonding strength between the substrate and deposition decreased when the number of layers increased.
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