Austenite-Martensite Phase Transformation in Fe-31.5%Ni-10%Mn Alloy A.C. Magnetic Susceptibility

Abstract

A.C. of the samples prepared with different deformations from Fe - 31.5%Ni- 10%Mn alloy, in which a diffusionless phase transformation was observed. magnetic susceptibility was measured under low magnetic field. Real and imaginary A.C. (Alternative current) of the samples at fixed frequency. Curie temperatures and magnetic susceptibility were determined. The effect of martensite phase on magnetic phase transitions was investigated. It was understood that the magnetic phase transition of the alloy was in the form of P.M (Permaneutic) àF.M (Ferromagnetic) +R.S.G (Reanterant Spin Glass) àA.F.M (Antiferromagnetic) + S.G (Spin Glass) and did not change with physical effects.