Hello everyone,
I obtained a nanostructured (or maybe rather ultra-fine grained) material (grains of about 200nm) just by hot forging as-cast alloy. This material is based on high entropy alloy (Fe, Cr, Ni, Mn, Co) and it possess FCC structure. Is it possible that some kind of transformation from fcc to martensite and then once again to fcc occurs, like in metastable austenitic steels? It is still very surprising to me, as far as I know nanostructure can be obtain only using high deformation techniques, like cold rolling.
Stress-strain curve of this material is also quite spectacular, with yield strength of ~ 750MPa, elongation ~40% and low work hardening coefficient.
I obtained a nanostructured (or maybe rather ultra-fine grained) material (grains of about 200nm) just by hot forging as-cast alloy. This material is based on high entropy alloy (Fe, Cr, Ni, Mn, Co) and it possess FCC structure. Is it possible that some kind of transformation from fcc to martensite and then once again to fcc occurs, like in metastable austenitic steels? It is still very surprising to me, as far as I know nanostructure can be obtain only using high deformation techniques, like cold rolling.
Stress-strain curve of this material is also quite spectacular, with yield strength of ~ 750MPa, elongation ~40% and low work hardening coefficient.
