The unique concept of phase reversion involving severe deformation parent austenite into martensite, followed by annealing for a short duration, whereby the strain-induced martensite reverts to austenite, was adopted obtain nano-grained/ultrafine-grained (NG/UFG) structure in Cu-bearing biomedical austenitic stainless steel resulting high strength-high ductility combination. Work hardening and ...

Abstract Effects of reduced (– 40 °C), ambient (20 and elevated (200 °C) deformation temperatures on the microstructure evolution strain hardening behavior two low-C thermomechanically processed high-manganese steels were studied. The was characterized by means scanning electron microscopy (SEM), backscatter diffraction (EBSD), transmission (TEM) techniques. temperature-dependent tendency auste...

Abstract In this study, the effect of hydrogen on dislocation and twinning behavior along various grain boundaries in a high-manganese twinning-induced plasticity steel was investigated using an situ micropillar compression test. The compressive stress both elastic plastic regimes increased with presence hydrogen. Further investigation by transmission electron backscatter diffraction scanning m...

The volume fraction of austenite (γ), ε martensite and α′ is key importance in the research TWIP/TRIP steels. When mechanical loading involved, crystallographic texture also develops, which complicates X-ray diffraction-based phase ratio determination. problem more pronounced when only a couple, or one Bragg-reflection can be measured. A solution for such cases to determine phases based on pole...