Fatigue strength improvement of the AISI 316Ti austenitic stainless steel by shot peening

Abstract

Stainless steels are structural materials used for a wide range of applications. One of the fields of application of these highly corrosion resistant materials is for various medical applications. Different methods of mechanical property improvement have been studied in recent years to increase the durability of components manufactured from these materials. The main goal of this study was an analysis of fatigue strength improvement of the AISI 316Ti austenitic stainless steel by shot peening. A significant improvement of surface hardness, yield strength and fatigue limit by shot peening was observed in this study. This is despite increasing the surface roughness which usually degrades material’s fatigue strength.

Keywords

• stainless steel
• AISI 316L
• shot peening
• fatigue strength