Deep Rolling at Lower and Elevated Temperatures - Effects and Consequences on Fatigue Behavior

Author:  A. Cherif, I. Nikitin, P. Juijerm, W. Zinn, B. Scholtes
Source:  Conf Proc 2014: ICSP-12 Goslar, Germany (pgs.386-391)
Doc ID:  2014108
Year of Publication:  2014
Abstract:  
Mechanical surface treatments, e. g. deep rolling or shot peening, are widely used in industrial practice to increase fatigue life and strength of complexly loaded components like axles or shafts in drive systems. Their effectiveness is based on near surface plastic deformation resulting in strain hardening effects as well as compressive residual stress fields, alterations of surface topography and possibly phase transformations. Due to the influence of process temperature or subsequent annealing processes on the resulting materials microstructures, in addition to conventional processes, various simultaneous or consecutive combinations of heat input and plastic deformation are used to produce favorable near surface microstructures. In this paper, selected examples are presented and discussed.