Inverse elastocaloric effect in a Ti-Ni alloy containing aligned coherent particles of Ti3Ni4
Inverse elastocaloric effect in a Ti-Ni alloy containing aligned coherent particles of Ti3Ni4
复制标题
含有 Ti3Ni4 排列相干颗粒的 Ti-Ni 合金中的逆弹热效应
DOI：
10.1016/j.scriptamat.2016.07.016
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发表时间：
2016-11-01
影响因子：
6
通讯作者：
Kakeshita, Tomoyuki
中科院分区：
文献类型：
--
作者：
Xiao, Fei;Fukuda, Takashi;Kakeshita, Tomoyuki
我们在含有Ti3Ni4取向共格颗粒的Ti-51Ni(at%)合金中检测到了相反的弹性热效应。在该合金中，由于应力诱导的逆马氏体相变(从R相到B2相)，当施加应力时，试件的温度降低，在300K时，这一效应引起的温度降低约为1.1K，Ti3Ni4析出物周围的内应力场是造成这种影响的原因。由于传统的弹性热效应，拉应力的进一步增加会导致温度升高。(C)2016爱思唯尔有限公司。保留所有权利。
We have detected an inverse elastocaloric effect in a Ti-51Ni (at%) alloy which contains aligned coherent particles of Ti3Ni4 formed by aging under tensile stress. In this alloy, the temperature of the specimen decreases when stress is applied due to a stress-induced reverse martensitic transformation (from the R-phase to the B2-phase) The temperature decrease caused by this effect is about 1.1 K at 300 K. The internal stress field around the Ti3Ni4 precipitate is responsible for this effect. A further increase in the tensile stress causes a temperature rise due to a conventional elastocaloric effect. (C) 2016 Elsevier Ltd. All rights reserved.