METHOD FOR ALLOWING SHAPE MEMORY STAINLESS STEEL TO MEMORIZE SHAPE

申请公布号：JPH02301514(A)

申请号：JP19890121221

申请日期：1989.05.15

申请公布日期：1990.12.13

申请人：

NISSHIN STEEL CO LTD

发明人：TAKEMOTO TOSHIHIKO;KINUGASA MASAHIRO;TANAKA TERUO;IGAWA TAKASHI

分类号：C21D8/00;C22C38/00;C22C38/52

主分类号：C21D8/00

摘要：PURPOSE:To allow even a stainless steel having >10% Cr content and superior corrosion resistance to advantageously exhibit shape memory characteristics by rendering a specified compsn. based on the compsn. of an Fe-Cr steel and having property regulated Mn, Si and Co contents. CONSTITUTION:A steel consisting of, by weight, <=0.03% C, 3.0-6.0% Si, 6.0-25.0% Mn, <=7.0% Ni, 10.0%<Cr<=17.0%, 0.02-0.3% N, 2.0-10.0% Co, 0.05-0.8% one or more among Nb, V, Zr and Ti and the balance Fe or if necessary further contg. <=2.0% Mo and/or <=2.0% Cu and having >=-26.0 D defined by the equation is worked into a prescribed shape, annealed, deformed at ordinary temp. or below and heat-treated at 450-700 deg.C. After this deformation and heat treatment are repeated once or more, the temp. of the steel is returned to ordinary temp. The steel is allowed to memorize the final shape.

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