PROBLEM TO BE SOLVED: To provide a shape memory heat treatment method capable of providing a high-performance component made of a Ti-Ni shape memory alloy.SOLUTION: The provided shape memory heat treatment method of a Ti-Ni shape memory alloy is a method in which a Ti-Ni shape memory alloy is subjected to a shape memory heat treatment a strain ranging from a martensite phase elastic deformation region to a stage immediately preceding the plastic fracture of a plastic deformation region is bestowed by means of cold working initially and then of heating or hot working in a heated state.COPYRIGHT: (C)2014,JPO&INPIT【課題】高性能のTi-Ni系形状記憶合金製部材を提供できる形状記憶熱処理方法を提供する。【解決手段】Ti-Ni系形状記憶合金に形状記憶熱処理を施す方法であって、マルテンサイト相弾性変形領域から塑性変形領域の塑性破断直前までに至る歪を、冷間加工して付与しその後加熱するか、又は加熱しながら熱間加工して付与することを特徴とするTi-Ni系形状記憶合金の形状記憶熱処理方法。【選択図】図1
