Hardness-gradient reversion in FeMnSiCr shape memory alloy modules produced by high-speed high pressure torsionLeandru-Gheorghe Bujoreanu, Viorel Goanță, Nicanor Cimpoeșu, Carmela Gurău, Marius-Gabriel Suru, Elena Mihalache and Gheorghe GurăuMATEC Web of Conferences, 33 (2015) 04001DOI: https://doi.org/10.1051/matecconf/20153304001