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    • 64. 发明授权
    • Ti-Ni alloy articles having a property of reversible shape memory and a
method of making the same
    • 具有可逆形状记忆特性的Ti-Ni合金制品及其制造方法
    • US4707196A
    • 1987-11-17
    • US773435
    • 1985-09-06
    • Toshio HonmaMinoru NishidaKiyoshi Yamauchi
    • Toshio HonmaMinoru NishidaKiyoshi Yamauchi
    • C22C14/00C22C19/03C22F1/00C22F1/10
    • C22F1/006
    • A reversible shape memory (R.S.M.) article of Ti-Ni alloy containing excess Ni over the stoichiometric composition, such as containing 50.3-53.0 at. % Ni which has a dual phase structure of a TiNi compound phase and a precipitated Ni rich compounds phase and the improved R.S.M. property wherein the different two shapes are recovered by thermal cycles between two temperatures sufficient higher and lower than the martensitic transformation temperature (Ms). The alloy prepared by the melting method is heat-treated at 600.degree. C. or more to be made into a single phase of TiNi compound after being worked into a strip plate, and the plate is fixedly wound on a pipe and aged at 300.degree. C.-600.degree. C. for one or more hours, whereby the article having the R.S.M. property with a large amount of shape change by thermal cycles can be obtained.
    • 含有超过化学计量组成的过量Ni的Ti-Ni合金的可逆形状记忆(R.S.M.)制品,如含有50.3-53.0英寸 %Ni,其具有TiNi化合物相的双相结构和沉淀的富Ni化合物相和改进的R.S.M. 性质,其中通过热循环在足够高于和低于马氏体相变温度(Ms)的两个温度之间回收不同的两种形状。 将通过熔融法制备的合金在600℃以上进行热处理,在加工成带状板后,将其制成单相TiNi化合物,将该板固定在管上并在300℃老化 C.-600℃一个或多个小时,由此物品具有RSM 可以获得通过热循环大量形状变化的性质。