Abstract
Fe-based alloys can exhibit shape-memory effects through different kinds of martensitic transformations. We have synthesized new alloys with composition Fe 56Co 7Ni 7Ti 7.5Nb 2.5B 20 by melt spinning and cold crucible casting and we have studied the evolution of their magnetic and crystallographic properties when heated from room temperature to 900°C. The techniques used to measure their evolution are in situ powder neutron diffraction and torque magnetometry. A large temperature-hysteresis phenomenon (400°C) is observed between room temperature and 900°C.
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