Comparison between conventional shot peening (SP) and surface mechanical attrition treatment (SMAT) on a titanium alloy

Abstract

In this paper the residual stress states induced by conventional shot peening (SP) and surface mechanical attrition treatment (SMAT) are compared. The treated parts correspond to plates made of a titanium alloy. Different intensities of these two mechanical treatments are first considered: their influence on the surface characteristics (roughness, hardness...) is studied. These experimental data are then used to develop a model for the residual stress profiles with dimensional analysis. Experimental and analytical approaches are then discussed. © (2014) Trans Tech Publications, Switzerland.