Martensitic transformation and superelasticity in Pd-In-Fe alloys were investigated. Pd-In-Fe alloys show martensitic transformation from a Heusler-type L2_1 ordered bcc phase to a 2M-type DO_<22> structure. It was confirmed from compressive test and three-point bending test that an almost perfect superelastic effect accompanying the stress-induced martensitic transformation can be obtained. Since high corrosion resistance and specific gravity are expected in these Pd-based shape memory alloys (SMAs), the present alloys are potentially applicable for medical devices.
