Elastocaloric effect in Ni50Fe19Ga27Co4 single crystals
Elastocaloric effect in Ni50Fe19Ga27Co4 single crystals
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Ni50Fe19Ga27Co4 单晶的弹热效应
DOI:
10.1016/j.actamat.2015.05.054
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发表时间:
2015-09
期刊:
影响因子:
9.4
通讯作者:
Xuejun Jin
中科院分区:
文献类型:
--
作者:
Fei Xiao;Mingjiang Jin;Jian Liu;Xuejun Jin
The elastocaloric effect of the [0 0 1]Pand [1 1 1]Porientated (subscript P represents the parent phase) Ni50Fe19Ga27Co4(at.%) single crystals exhibiting first-order martensitic transformations have been studied at temperatures of 298–448 K under different compressive stresses. The adiabatic temperature change ΔTadishows a significant dependence on the crystal orientation. The temperature decrease caused by adiabatic removal of stress 300 MPa reaches to about 9–10 K in a temperature range 328–398 K for [0 0 1]Pspecimen and 3 K at temperature nearAffor [1 1 1]Pone. The large elastocaloric effect is essentially attributed to the entropy change during the stress-induced martensitic transformation. The accumulated defect such as thea/2<1 1 2> L10type dislocation is the main reason for the attenuation of the elastocaloric effect in a fatigue test up to 3000 cycles. Large specific adiabatic temperature (|ΔTadi/Δσ| ≈ 35 K/GPa), wide specific effective temperature window (|ΔTwin/Δσ| ≈ 320 K/GPa) and high coefficient of performance (COP ≈ 14) in a temperature range as wide as 50 K during the unloading process enable the [0 0 1]Porientated Ni50Fe19Ga27Co4single crystal as a potential elastocaloric material.
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影响因子:
9.4
作者:
A. Kosogor;V. L'vov;V. Chernenko;E. Villa;J. Barandiaran;T. Fukuda;T. Terai;T. Kakeshita
通讯作者:
A. Kosogor;V. L'vov;V. Chernenko;E. Villa;J. Barandiaran;T. Fukuda;T. Terai;T. Kakeshita
影响因子:
4
作者:
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作者:
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通讯作者:
Planes, Antoni
DOI:
10.1016/0001-6160(74)90055-8
发表时间:
1974-07
期刊:
Acta Metallurgica
影响因子:
--
作者:
H. Tong;C. M. Wayman
通讯作者:
H. Tong;C. M. Wayman
影响因子:
1.6
作者:
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通讯作者:
F. Xiao;T. Fukuda;T. Kakeshita