MANUFACTURE OF NI-TI ALLOY SHEET AND NI-TI ALLOY MEMBER

摘要

PROBLEM TO BE SOLVED: To manufacture an Ni-Ti alloy sheet capable of being rolled without causing edge crack, breaking or the like at the reduction ratio of 20-60% and to efficiently manufacture an Ni-Ti alloy member at a low cost. ;SOLUTION: (1) In this manufacturing method of the Ni-Ti alloy sheet by which a Ni-Ti base alloy is made into a sheet by applying rolling, a process constituted of annealing, grinding for making the surface roughness of both end faces in the width direction into ≤50m and cold rolling at a reduction ratio of 20-60% is executed one or more times. (2) In this method for manufacturing the Ni-Ti alloy member, the Ni-Ti alloy sheet is punched or cut so that it has partially the connecting parts, is subjected to the bending, then subjected to shape memory heat treatment without applying bending, thereby separating the connecting parts from the sheet.;COPYRIGHT: (C)1997,JPO