Simulation of Particle Deposition Behavior in Cold-Sprayed Mg Anticorrosion Coating

In this work, finite-element analysis method is adopted to simulate Al particle deposition behavior on Mg substrate by cold spray. The effects of particle parameters such as incident velocities and angles, particle sizes, and number and types of incident particles on impacting character are analyzed. The particle energy, effective plastic strain, and its temperature distribution are discussed. Results reveal that increasing the particle incident velocity can intensify the deformation of both particle and substrate. The bonding will also be strengthened. Incident angles will also affect the bonding between particles and substrate. In multiple particle deposition process, the compaction effect of subsequent particles can promote the deformation of former particles and its bonding with substrate. Temperature distribution and the effective plastic strain distribution are consistent: temperature is higher in the area where the plastic deformation and stress is higher. Local melting may occur in that area at high temperature.