Conventional and inverse elastocaloric effect in Ni-Fe-Ga and Ni-Mn-Sn ribbons

被引：33

作者：

Alvarez-Alonso, P. ^{[1
]}

Aguilar-Ortiz, C. O. ^{[2
]}

Villa, E. ^{[3
]}

Nespoli, A. ^{[3
]}

Flores-Zuniga, H. ^{[2
]}

Chernenko, V. A. ^{[4
,5
,6
]}

机构：

[1] Univ Basque Country, UPV EHU, Dept Elect & Elect, Leioa 48940, Spain

[2] IPICYT, Div Mat Avanzados, San Luis Potosi 78216, Mexico

[3] CNR, IENI, Unita Lecco, I-23900 Lecce, Italy

[4] Ikerbasque, Basque Fdn Sci, Bilbao 48013, Spain

[5] BCMaterials, Bilbao 48080, Spain

[6] Univ Basque Country, UPV EHU, Bilbao 48080, Spain

来源：

SCRIPTA MATERIALIA | 2017年 / 128卷

关键词：

Shape memory alloys; Martensitic transformation; Elastocaloric effect; SHAPE-MEMORY PROPERTIES; MAGNETIC-FIELD; ALLOY; NI2MNGA; TI3NI4; STATE;

D O I：

10.1016/j.scriptamat.2016.09.033

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Magnetic shape memory Ni55Fe16Ga29 and Ni50Mn40Sn10 melt spun ribbons have been characterized by thermomechanical and mechanical analysis. Martensitic transformation temperatures show an abnormal tendency to decline under low stress followed by a conventional increase above a threshold stress, related to the internal compressive stress generated in the fabrication process. The shrinkage of the samples during the forward martensitic transformation gives rise to an inverse elastocaloric effect. A conventional contribution in the total elastocaloric response is observed when applied stress overcomes the internal one. The conventional and inverse elastocaloric effects are attributed to the stress-induced forward and reverse martensitic transformation, respectively. (C) 2016 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：36 / 40

页数：5

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