The Mossbauer spectroscopy studies of epsilon to cementite carbides transformation during isothermal heating from as-quenched state of high carbon tool steel

Abstract

This work presents results of investigations using the Mossbauer spectroscopy technique and their interpretation concerning transformation of ² to cementite carbides during tempering in relation to the previously conducted dilatometric, microscopic and mechanical investigations. Investigations were performed on 120MnCrMoV8-6-4-2 steel. The in°uence of the tempering time on nucleation and solubility of ² carbides, and on cementite nucleation and growth, was determined. The analysis of phase transformations during various periods of tempering using the Mossbauer spectroscopy technique made possible to reveal ¯ne details connected with the processes.