Output details

Evaluating surface deformation and near surface strain hardening resulting from shot peening a tempered martensitic steel and application to low cycle fatigue

Significance of output:

Before surface deformation and near surface strain hardening resulting from shot peening can be accepted into industrial component lifing procedures for shot peened components, the methods used to evaluate these properties must be systematically evaluated and standards adopted. This E.On sponsored work is to our knowledge the first paper published which provides an explicit comparison of two dimensional and three dimensional surface roughness characterisation techniques and of calibrated microhardness, X-ray Diffraction (XRD) and Electron Backscattered diffraction (EBSD) methods for evaluating strain distribution. The latter techniques are then used to study changes in the plastic strain distribution with low cycle fatigue.