Identification and Characterization of Phase Transformations by the Resistivity Measurements in Mg-RE-Mn Alloys

Abstract

The response of the relative resistivity changes to the isochronal annealing was measured in MgSc, MgScMn and MgYNdScMn alloys. The derivatives of the annealing curves were fitted by Gaussian functions to determine and separate the temperature ranges of the phase transformations taking place.

TEM observation verified the conclusions drawn from the procedure.

Keywords

• Electrical resistivity
• isochronal annealing
• Mg alloys
• rare earths
• phase transformations.