PT Journal AU Abramova, MM Enikeev, NA Valiev, RZ Etienne, A Radiguet, B Ivanisenko, Y Sauvage, X TI Grain boundary segregation induced strengthening of an ultrafine-grained austenitic stainless steel SO Materials Letters PY 2014 BP 349 EP 352 VL 136 DI 10.1016/j.matlet.2014.07.188 LA english ER