Orientation dependence of elastocaloric effect in an aged Ni-rich Ti-Ni alloy
Orientation dependence of elastocaloric effect in an aged Ni-rich Ti-Ni alloy
复制标题
时效富镍 Ti-Ni 合金中弹热效应的取向依赖性
DOI：
10.1016/j.scriptamat.2019.04.030
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发表时间：
2019
影响因子：
6
通讯作者：
Takashi Fukuda
中科院分区：
文献类型：
--
作者：
Fei Xiao;Xiao Liang;Hong Chen;Zhenxing Li;Zhu Li;Xuejun Jin;Takashi Fukuda
利用时效态Ti-50.8Ni形状记忆合金单晶研究了应力诱发B2-R相变和逆马氏体相变（B2：母相，R：马氏体相）引起的弹性热效应。在[100] B2方向上施加拉应力时，观察到逆弹热效应，而在[111] B2方向上观察到常规弹热效应。该结果意味着在[100] B2方向上的转化应变对于任何变体都是阴性的。
Elastocaloric effects caused by the stress-induced B2-R and the reverse martensitic transformations (B2: the parent phase, R: the martensite phase) were studied by using an aged single crystal of Ti-50.8Ni shape memory alloy including coherent precipitates of Ti3Ni4. Inverse elastocaloric effect was observed when tensile stress is applied in the [100]B2direction, while conventional one was observed in the [111]B2direction. This result implies that transformation strain in the [100]B2direction is negative for any variants.