Effect of particle and substrate preheating on particle deformation behavior in cold spraying

The cold spray process usually involves preheating particle and increasing particle impact velocity to improve the deposition efficiency. In the present study, the effect of particle and substrate preheating on the deformation behavior of cold sprayed particle was investigated using the Eulerian formulation available in software of ABAQUS/Explicit with typical copper material. Preheating ways were used by realizing different temperatures on the substrate, particle and both. Calculated results show that different preheating ways result in different deformation patterns, the flattening ratio and compression ratio of Cu particle and the maximum equivalent plastic strain. Preheating whole model, substrate and particle shows a coordinated deformation pattern, penetration way and spreading way, respectively.

► Preheating ways were realized by loading temperature on substrate and particle. ► Coordinated deformation pattern, penetration and spreading way were shown. ► The coordinated deformation pattern is superior to particle bonding.