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发明公开
CN110819871A 一种低启动阀值的磁性记忆合金及其制备方法 无效 - 撤回

一种低启动阀值的磁性记忆合金及其制备方法
摘要：
本发明提供一种低启动阀值的磁性记忆合金及其制备方法，该合金与现有材料相比具备优良的力学性能和磁致应变低启动阀值这两方面的优点。该合金化学式为：CoxAlyNizPrj；其中，32.8≤x≤39.7，32.5≤y≤37.6，28.3≤z≤32.4，0.6≤j≤1.2，x+y+z+j＝100，x、y、z、j表示摩尔百分比含量。本发明磁控形状记忆合金与现有材料相比，在合金的基体相中形成了共格超细弥散分布的Co19Pr5金属间化合物，使合金兼具良好的力学性能和磁性性能的特征，促使合金能够实现兼具优良力学性能和低启动阀值的特点，大大的拓宽了该类合金的工业应用范围。
摘要（英）：

The invention provides a low start threshold magnetic memory alloy and a preparation method thereof. Compared with existing materials, the low start threshold magnetic memory alloy has the advantagesof excellent mechanical properties and magnetoelastic strain low start threshold. The chemical formula of the alloy is CoAlNiPr, wherein x is greater than or equal to 32.8 and is less thanor equal to 39.7, y is greater than or equal to 32.5 and is less than or equal to 37.6, z is greater than or equal to 28.3 and is less than or equal to 32.4, j is greater than or equal to 0.6 and isless than or equal to 1.2, x plus y plus z and plus j is equal to 100, and x, y, z and j represent molar percentage content. Compared with the existing materials, the magnetically controlled shape memory alloy forms a Co19Pr5 intermetallic compound with a coherent ultrafine dispersion distribution in a matrix phase of the alloy, so that the alloy has both the characteristics of good mechanical properties and magnetic properties, and the alloy is promoted to have the characteristics of both excellent mechanical properties and low start threshold, and the industrial application range of the typeof alloy is greatly broadened.

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