Abstract
Fe-14Mn-6Si-9Cr-5Ni (mass. %) shape memory alloy (SMA) has been developed as a commercial grade of Fe-Mn-Si based SMAs with excellent formability and corrosion resistance. Producing FeMnSiCrNi SMAs by powder metallurgy enables a better control of chemical composition and grain size. This paper discusses the variation of bending creep deformation, as a function of time, temperature and force, in the case of a powder metallurgy (PM) Fe-14Mn-6Si-9Cr-5Ni SMA with 50 % mechanically alloyed powder volume. Creep test temperatures were selected based on phase transitions determined by dynamic mechanical analysis (DMA), during heating. The results suggested the tendency of martensite plate variants to reorient along a common direction, after creep.
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