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Co-Ni-Al Shape memory alloy and method for producing same

机译:Co-Ni-Al形状记忆合金及其制造方法

摘要

A shape memory alloy comprises Co, Ni and Al with a two-phase structure comprising a β-phase having a B2 structure and a γ-phase having an fcc structure, at least 40% by area of crystal grain boundaries of the β-phase being occupied by the γ-phase. The shape memory alloy can be produced by a first heat treatment step comprising heating at 1200 to 1350°C for 0.1 to 50 hours and cooling at 0.1 to 1000°C/minute, and a second heat treatment step comprising heating at 1000 to 1320°C for 0.1 to 50 hours and cooling at 10 to 10000°C/minute.
机译:形状记忆合金由Co,Ni和Al构成,该Co,Ni和Al为两相结构,该两相结构的B晶相的面积至少为40%,该B相具有B2结构的β相和具有fcc结构的γ相。被γ相占据。形状记忆合金可通过包括在1200至1350℃下加热0.1至50小时并以0.1至1000℃/分钟冷却的第一热处理步骤以及包括在1000至1320℃下加热的第二热处理步骤来生产。保持0.1至50小时,并以10至10000℃/分钟冷却。

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