EffectsoftheNbadditiononthestraininducedferritetransformationjustaboveAr3 temperaturewereinvestigated.Hot compressiontestswereperformedwithvaryingthetruestrainupto1.6(80% reduction)usingGleeble1500.Afterthehot deformation,sampleswereimmediatelywater-quenchedtoexamineferriteformation characteristics.Thegrainboundary misorientationanglesweremeasuredbyelectronbackscatterdiffractioninorderto observeevolutionoftheferritegrains.For reheatingtemperaturessuchas900and10008C