Efeito da taxa de aquecimento na revers？o da martensita induzida por deforma？？o em um a？o inoxidável austenítico do tipo ABNT 304

austenitic stainless steels specimens were deformed by tension from 0.03 to 0.12 of true strain at -50oc and -10oc, in order to obtain different volumetric fractions of e and α' strain induced martensites. the morphology, distribution and volumetric fractions of the strain induced martensites were characterized by metallography and dilatometry analysis and quantified by ferrite detector measurements. the reverse transformation temperatures of ε→γ and α'→γwere detected by dilatometry tests. the e and α' martensites reversion was observed in the temperature range of 50-200oc and 500-800oc, respectively. the heating rate did not influence the reversing of ε→α' temperatures but did affect the α'→γtransformation temperatures.