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发明公开
CN1546706A 微米晶镍铝－铁形状记忆合金块材制备方法 失效 - 权利终止

微米晶镍铝－铁形状记忆合金块材制备方法
摘要：
一种微米晶镍铝－铁形状记忆合金块材制备方法，将原料按原子百分比镍为57％～62％，铝为23～25％，铁为15％～18％配好，在真空条件下熔炼，制成镍铝－铁合金铸锭，将镍铝－铁合金块材切割成坯料，进行表面光洁度处理，并涂敷玻璃润滑剂，采用挤压通道角度为90～120°的等径弯角挤压模具，模具型腔表面涂敷石墨润滑剂，将坯料、模具分别加热保温，并同时从加热炉中取出进行等径弯角挤压，最终获得强度、塑性等性能良好的镍铝－铁合金块材。本发明可以解决镍铝－铁形状记忆合金室温塑性差的问题，提高合金力学性能，同时降低合金处理成本，提高其成材率。
摘要（英）：

The invention discloses a microcrystal nickel aluminum-ferrum shape memory alloy block material preparation method which comprises, preparing the raw materials by the atom percentage of nickel 57-62%, aluminum 23-25%, ferrum 15-18%, smelting under vacuum condition, obtaining nickel-aluminium-ferrous alloy cast ingot, cutting the nickel-aluminium-ferrous alloy into blanks, carrying out surface smoothness treatment, and coating glass lubricant, using equal diameter curved corner compression die with extruding channel angle being 90-120 degrees, coatint the die molding volume surface with graphite lubricant, subjecting the blank and die arrangement respectively to heating and heat preservation, carrying out equal diameter curved corner extrusion simultaneously after being taken out of the heating-furnace.

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