TiNi超弾性合金細線の強度に及ぼす環境の影響

抄録

In this study, the tensile behavior of TiNi super elastic alloy under various hydrogen environments was investigated by using thin wires with various diameters. Ductility and tensile strength of TiNi super elastic alloy which absorbed hydrogen decreased. At the same charging time, tensile strength decreased with decreasing wire diameter. Compared TiNi super elastic alloy with TiNi shape memory alloy, tensile strength of TiNi super elastic alloy is higher than that of TiNi shape memory alloy in spite of hydrogen charging times. However, there is little difference in growth behavior of brittle layer formed by hydrogen charging between TiNi super elastic alloy and TiNi shape memory alloy.