Relaxation Of Shot Peening Residual Stresses Of The Steel 42 Crmo 4 By Tensile Or Compressive Deformation

Author:  Hanagarth, Vohringer, Macherauch
Source:  Conf Proc: ICSP-4, (p.327-336)
Doc ID:  1990058
Year of Publication:  1990
Abstract:  
The relaxation behaviour of shot peening residual stresses of the steel 42 CrMo 4 (A1S1 4140) in a quenched and tempered state was investigated in uniaxial tension and compression tests, respectively. After deformation to given strain values, residual stresses were determined in the unloaded state by X-ray measurements. In compression tests, the relaxation of shot peening induced compressive residual stresses in the surface layers starts at the stress value +__-400 N/mm+