Abstract

The properties of the Ti₅₀Pd₄₀Ni₁₀ (at %) alloy showing the high-temperature shape memory effect are studied in detail using samples made of a 5.86 mm bar under various conditions of annealing and induced deformation. The data on the phase transformation temperatures and the mechanical and thermomechanical characteristics of the alloy are obtained. The range of phase transformations occurs in the range from M_f = 360°C to A_f = 439°C. These are acceptable values for creating the required safety device. The maximum values of the shape memory effect and the degree of shape recovery are 2.4 and 43%, respectively. This is not sufficient to create a functional security device. Thus, the selection of annealing modes and conditions for inducing deformation are not a successful way to substantially increase the thermomechanical characteristics of the alloy. Higher values of thermomechanical characteristics have previously been obtained using samples cut from a strip with a thickness of 2.04 mm. Therefore, operating elements of safety devices designed for nuclear power facilities will be further manufactured from the strip.

中文翻译：

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退火对棒状坯料上Ti 50 Pd 40 Ni 10高温形状记忆合金力学和热机械特性的影响

摘要

使用5.86 mm棒材制成的样品，在各种退火和诱发变形条件下，详细研究了显示出高温形状记忆效应的Ti ₅₀ Pd ₄₀ Ni ₁₀（at％）合金的性能。获得有关合金的相变温度以及机械和热机械特性的数据。相变范围发生在从M _f = 360°C到A _f的范围内＝ 439℃。这些是创建所需安全设备的可接受值。形状记忆效果和形状恢复度的最大值分别为2.4％和43％。这不足以创建功能性安全设备。因此，选择退火方式和引起变形的条件不是成功地实质上提高合金的热机械特性的成功方法。先前已经使用从厚度为2.04 mm的条上切下的样品获得了更高的热机械特性值。因此，将进一步从带钢制造用于核电设施的安全装置的操作元件。