Probing Grain-Level Residual Stresses in Railway Steels

Residual stresses that develop during the heat treatment of railway steels can cause material failure. Here we investigate grain level stresses in samples with defined strain and heat treatment procedures using Dark Field X-ray Microscopy. The aim is to measure the intra granular strain and orientation gradients, Obtained results will not only help understanding the strain formation but also can be used as input parameters for material modelling.