Deformation-inducedmicrostructuresofhigh-Mnaustenitesteelwasinvestigatedbymetallography,X-raydiffractionandSEM.Theε-martensiteandslip-bandsaredeformation-in-ducedonthe{111}planes,andappearasthinstraightlathswith60~80°alignmentdifferencebe-tweenthem.Itwasfoundthatε-martensiteandslipbandsarekinkedatfcctwinboundarieswiththekinkedangle35~40°.Thebandsofequilateraltriangleinthemicrostructureoftensiledeformationarepresented.