In Situ Stress Measurements by Neutron Diffraction in α-γ Fe-Cr-Ni Alloys During Deformation

摘要: In situ neutron diffraction experiments during tension-compression deformation were performed for five Fe-Cr-Ni alloys with the volume fraction of ferrite varied from 0.0 to 100 %. Specimens strained by tensile a step manner up few percent plastic strain followed unloading and then subsequently deformed in compression same manner. The lattice plane spacings (α) austenite (γ) single-phase alloy before loading used as reference stress-free determine strains α-γ dual phase alloys. It has been found that large residual generated cause Bauschinger effect alloy. Due high resolution diffractometer, microstrains both phases could be extracted profiles. obtained do not vary elastic while significant increase an was observed.