C-17 Fabrication of Ti-Ni Shape Memory Alloy by Metal Injection Molding(Session: MIM/Tool)

抄録

We tried to fabricate Ti-Ni shape memory alloy using elemental Ti and Ni powders by metal injection molding (MIM). Gas-atomized Ti powder, TiH_2 powder and carbonyl Ni powder were used in this study. The use of fine TiH_2 powder results in improvement of sinterability of this alloy. The tensile strength and elongation of the as-sintered compacts of TiH_2 powder were more than 200 MPa and 3%, respectively. The deformation resistance of the compacts of Ti powder is fairly lower than that of the compacts of TiH_2 powder. The yielding stage became clear in the stress-strain curve of the alloy by performing shape memory treatment.