Deformation-induced twinning has been a notable example of overcoming the strength/ductility trade-off dilemma as strengthening mechanism. By borrowing this concept from area TWIP steels, we designed thermomechanical treatment for CoCrFeMnNi high-entropy alloy to improve its mechanical characteristics. We used pre-straining at 77 K introduce deformation-induced twins in microstructure alloy, an...

Hydrogen-assisted crack growth of pre-strained twinning-induced plasticity (TWIP) steel was investigated using artificial defects (micro-drilled holes), which acted as initiation sites. Hydrogen introduced into the specimens by electrochemical hydrogen charging during slow strain rate tensile test. The quasi-cleavage propagation observed due to repeated near tip and subsequent coalescence. Crac...

Abstract. High-Mn steels have great plasticity when subjected to deformation due TWIP or TRIP effects. This work evaluated the microstructural evolution, formation of -Martensite phase taking into account hot rolling 80-60% and solution annealing. Afterwards, microstructures were analyzed by SEM. Volume fraction Austenite phases measured EBSD technique. The steel obtained low energy levels sta...