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首页> 外文期刊>Journal of Materials Engineering and Performance >Heat Estimation from Infrared Measurement Compared to DSC for Austenite to R Phase Transformation in a NiTi Alloy
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Heat Estimation from Infrared Measurement Compared to DSC for Austenite to R Phase Transformation in a NiTi Alloy

机译：NiDS合金中红外测量与DSC的奥氏体向R相转变的热估算

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摘要

Heat source estimations from temperature field measurements deduced from infrared imaging are increasingly used to study thermo-mechanical coupling during materials' deformation. These estimations are based on approximations of the derivative terms with respect to time and space which are involved in the heat diffusion equation. This paper proposes a first experimental validation of this method by applying it to an experimental uniform air cooling of a NiTi Shape Memory Alloy thin plate. In the studied cooling temperate range, heat sources are due to Austenite to R phase transformation. Transformation temperatures, heat sources, and energies are estimated from infrared temperature measurements and compared successfully to differential scanning calorimetry results.
机译：从红外成像推断出的温度场测量中得到的热源估计越来越多地用于研究材料变形期间的热力耦合。这些估计是基于热扩散方程中涉及的关于时间和空间的导数项的近似值。本文通过将该方法应用于NiTi形状记忆合金薄板的实验均匀空气冷却，提出了该方法的第一个实验验证。在研究的冷却温度范围内，热源归因于奥氏体向R相的转变。转换温度，热源和能量可通过红外温度测量估算出来，并成功与差示扫描量热法结果进行比较。

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