Effect of Cold Deformation On the Microstructure and Transformation Properties of Mechanical Alloyed Fe–14Mn–6Si–9Cr–5Ni Shape Memory Alloy

In this work, the aim was to investigate how cold rolling affect the microstructure evolution of mechanical alloyed  P/M Fe–14Mn–6Si–9Cr–5Ni alloy and further shape memory recovery amount after deformation. The characteristic of the martensitic transformation in a Fe–14Mn–6Si–9Cr–5Ni alloy was investigated in terms of the amount of deformation via cold rolling. Samples prepared by mechanical alloying starting from initial powder mixtures. Powders were compacted and then sintered at 1150 °C for 2 hours under Ar atmosphere. After applying different amount of cold deformation to the samples microstructural chances of the alloys were characterized by X-ray diffractometer (XRD) and scanning electron microscopy (SEM) and shape recovery amounts were calculated and compared with non-mechanical alloyed samples.