Elastocaloric effects in the extreme
Elastocaloric effects in the extreme
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DOI：
10.1016/j.scriptamat.2017.05.017
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发表时间：
2017-06
影响因子：
6
通讯作者：
H. Sehitoglu;Y. Wu;E. Ertekin
中科院分区：
文献类型：
--
作者：
H. Sehitoglu;Y. Wu;E. Ertekin
人们对形状记忆合金 (SMA) 的弹性热 (EC) 效应重新产生了兴趣。与 EC 效应相关的温度变化可能很大，远远超过在众所周知的电热和磁热材料中观察到的温度变化。 EC效应的主要驱动力是转变的熵变。历史上，超弹性下的 EC 效应主要在 25 °C 下进行研究。当前的论文考虑了各种测试温度下的六种 SMA，不仅关注 EC 冷却能力，还关注实际应用的三个重要因素：应力/热滞后、MD 温度和疲劳的作用。
There is a resurgence of interest in the elastocaloric (EC) effect of shape memory alloys (SMAs). The temperature change associated with the EC effect can be substantial, far exceeding those observed in well-known electrocaloric and magnetocaloric materials. The major driver of the EC effect is the entropy change of transformation. Historically the EC effect under superelasticity has been studied at mainly 25 °C. The current paper considers six SMAs across a variety of test temperatures, focusing not only on the EC cooling capability but also on three important factors for practical application: the role of stress/thermal hysteresis, Mdtemperature, and fatigue.