Effects of thermal treatments on mechanical properties of Cu-24.2%Mn alloy

Abstract

In this work, some physical and mechanical properties of Cu-24.2%Mn (wt %) alloy have been investigated by X-ray diffraction (XRD), Scanning Electron Microscopy (SEM) and compression deformation test. Austenite phase has been obtained in the samples by applying slowly cooling and rapidly cooling processes according to the SEM analysis. It has been observed that the grain size obtained by the rapidly cooling is smaller than the grain size obtained by the slowly cooling. Therefore, it has been concluded that the cooling process differences change the grain size of the alloy. Compression stress has been applied to the alloy in order to research the deformation effect on the austenite phase. Slip lines and martensite structure were observed on the surface of the alloys after the deformation. In the present work, shows that, in the slowly cooling and deformation provide not in effects of diriving forces on martensitic transformation, but the rapidly cooling and deformed sample was observed gamma(1)' (2H) martensite.