Peening & Surface Treatment

Cold spray is a process used to deposit materials onto a substrate by accelerating fine powder particles to high velocities using compressed gas. Upon impact with the substrate, the particles undergo rapid plastic deformation, disrupting surface oxide films and promoting bonding between metal surfaces. Unlike thermal spray processes, cold spray avoids thermal degradation and partial oxidation of the coating material, resulting in coatings with low porosity and oxygen content. The process is highly efficient, with deposition efficiencies often exceeding 90%. Shot peening is a metal treatment process that involves bombarding a surface with small, round metallic (usually steel), ceramic, or glass beads at high velocity. This process creates small indentations on the surface, which in turn introduces compressive residual stress into the material. These two processes are different and use for separate purposes but their simulations are the same.

Cold spray is particularly important in applications where thermal degradation or oxidation of the coating material is a concern or where the coating is required to be thick and free from defects. In this package, you will learn how to simulate this process with different methods, such as ALE and SPH, with different materials. For example, Cold spray simulation of steel particles impacts on the Inconel target using ALE method.