The Effect of LSP on the Structure Evolution and Self-Heating of ARMCO Iron under Cyclic Loading

This work is devoted to the experimental investigation of effect laser shock peening (LSP) on thermo-mechanical properties metals. ARMCO iron was chosen as model material for study. Samples were subjected LSP, and tested following procedure self-heating (Risitano) technique. To investigate damage that induced by heating, fatigue tests coupled with infrared thermography measurements. The results study showed LSP qualitatively changes temperature evolution in during cyclic loading. heating (energy dissipation) treated specimen several times higher than initial state. explain structural mechanisms energy dissipation, microstructure specimens examined using transmission (TEM) scanning (SEM) electron microscopy, well backscattering diffraction (EBSD). confirm qualitative change defect caused treatment.