| 摘要 |
PROBLEM TO BE SOLVED: To provide a ferromagnetic shape memory alloy excellent in ductility, having ferromagnetic properties and martensitic transformation, and to provide an actuator using the same. SOLUTION: This ferromagnetic shape memory alloy has a composition containing, by atom, 5 to 70% Co, 5 to 70% Ni and 5 to 50% Al, and the balance inevitable impurities and has a single phase structure composed of a βphase with a B2 structure or a dual phase structure composed of a γ phase with an fcc structure and a β phase with a B2 structure. |
