Research on change of phase transformation temperatures and electrical resistance triggered by heat treatment of alloy from Cu-Mn system

Abstract

This paper is aimed at studying influence of various heat treatments on transformation temperatures and electrical resistance properties of alloys from binary Cu-Mn system. It was noticed that with an increase in sample's grain size, transformation temperatures also increased. The activation energies of samples were calculated according to Kissinger and Augis-Bennett. Thermogravimetric and differential thermal analysis measurements were used to investigate phase transformations and kinetic parameters. The electrical values of resistance of alloy were investigated at different temperatures. The resistance as a function of quenching temperature showed a decrease. Depending on quenching techniques, Cu-Mn alloy can display different product phases such as parent phase and precipitation.