EFFECTIVE PARAMETERS OF SHOT PEENING TREATMENT ON IMPROVING THE DURABILITY OF INDUSTRIAL PRODUCTS MADE OF METALLIC MATERIALS

This article discusses the destructive phenomenon of fatigue in metals and its factors, such as surface roughness and cracks. The article highlights the importance of inducing Compressive Residual Stress (CRS) on the surface to prevent or delay fatigue failure. The most used technique for creating CRS is Shot Peening (SP) treatment involving throwing spherical balls on the surface of the material to induce plastic deformation. The article explains the process parameters of SP treatment and their influence on the resulting residual stress layer. Furthermore, the article presents SP impact on the mechanical, material, metallurgical, and fatigue properties of low-alloy steel.