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Cold-spray involving particle and substrate that are of distinct deformability, i.e., soft (particle)/hard (substrate) and hard (particle)/soft (substrate) systems, has been investigated using systematic numerical simulations. For the soft/hard system, the bonding and deposition is dominantly controlled by particle plasticity. In contrast, physical trapping and mechanical interlocking play an important...
Using finite element simulations, we examined the impact deformation of three different particle/substrate systems during cold-spray. A new approach based on the equivalent plastic strain averaged over the impact particle (PEEQ‾2) was employed to analyze the deformation and a rate parameter REQ, the steady rate of change of PEEQ‾2, was introduced. An excellent correlation between this rate parameter...
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