Effect of hot deformation conditions on magnetic properties of rare earth free magnetic Mn-Al-C alloy

•Deformation strain rate & temp effects on magnetic properties of Mn-Al-C are studied.•Effect of deformation on phase decomposition is discussed.•Changes in magnetic properties by proceeding deformation are discussed.•The pole figures of easy magnetic axis are represented. The effect of hot deformation parameters on the magnetic properties of Mn51Al47C2 (at%) alloy was investigated. The hysteresis loops of cylindrical samples hot compressed to 50% of initial height at temperatures of 600 °C, 650 °C and 700 °C with strain rates 0.001 S−1 and 0.1 S−1 were obtained by means of vibrating sample magnetometer. In order to find the effect of strain on the magnetic properties, hot compressed samples to 30%, 45%, 60% and 75% in a specific temperature and strain rate were investigated. It was found that by increasing strain and strain rate, the coercivity increases and the highest coercivity gained at the temperature of 650 °C. Moreover, by further straining, the developed texture changed and higher remanent magnetization was obtained in axial direction for lower strains and in radial direction for higher strains.