Stress evolution in plastically deformed austenitic and ferritic steels determined using angle- and energy-dispersive diffraction

In the presented research, intergranular elastic interaction and second-order plastic incompatibility stress in textured ferritic austenitic steels were investigated by means of diffraction. The lattice strains measured inside samples multiple reflection method using high energy X-rays diffraction during uniaxial situ tensile tests. Comparing experiment with various models interaction, it was found that Eshelby-Kröner model correctly approximates X-ray factors (XSFs) for different reflections hkl scattering vector orientations. verified XSFs used to investigate evolution first stresses both steels. It shown considering only anisotropy, non-linearity sin2ψ plots cannot be explained crystallographic texture. Therefore, a more advanced based on elastic-plastic self-consistent modeling (EPSC) is required analysis. Using such methodology non-linearities cos2φ explained, evolutions determined. deformation about 1–2% can completely exchange state stresses.