Fig. 1. X-raydiffractionpatternsofas-receivedandas-milledstainlesssteelpow-
ders. Theas-receivedpowderhasadual-phasestructureconsistingof γ-austenite
and α′-martensitephases.Anincreaseinfractionofmartenistephasewithme-
chanical millingprocessisobservedforbothsteels