PROBLEM TO BE SOLVED: To provide a working method capable of efficiently working a Cu- containing Ni-Ti shape memory alloy and also capable of producing a product minimal in defects.;SOLUTION: Plastic working is applied to a Cu-containing Ni-Ti shape memory alloy in a state heated to 550-850C. By this procedure, the occurrence of defects such as working crack can be practically prevented and workability can be drastically improved. Moreover, the hot working process can comprises one or more kinds among a hot forging step, a hot rolling step and a hot wire drawing step.;COPYRIGHT: (C)2001,JPO
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