Influence of Fe doping and magnetic field on martensitic transition in Ni-Mn-Sn melt-spun ribbons

被引：69
作者：
Aguilar-Ortiz, C. O. [1 ]
Soto-Parra, D. [2 ]
Alvarez-Alonso, P. [3 ]
Lazpita, P. [3 ]
Salazar, D. [4 ,5 ]
Castillo-Villa, P. O. [6 ]
Flores-Zuniga, H. [1 ]
Chernenko, V. A. [4 ,5 ,7 ]
机构：
[1] Inst Potosino Invest Cient & Tecnol AC, Div Mat Avanzados, San Luis Potosi 78216, Mexico
[2] Ctr Invest Mat Avanzados, SC Miguel Cervantes 120,Complejo Ind Chihuahua, Chihuahua 31109, Mexico
[3] Univ Basque Country, UPV EHU, Dept Electricidad & Elect, Leioa 48940, Spain
[4] BCMaterials, Bilbao 48080, Spain
[5] Univ Basque Country, UPV EHU, Bilbao 48080, Spain
[6] Inst Tecnol Oaxaca, Av Ing Victor Bravo Ahuja 125, Oaxaca De Juarez 68030, Mexico
[7] Ikerbasque, Basque Fdn Sci, Bilbao 48013, Spain
来源：
ACTA MATERIALIA | 2016年 / 107卷
关键词：
Ni(Fe)-Mn-Sn metamagnetic shape memory alloy; Martensitic transformation; Phase diagram; Entropy; Magnetocaloric effect; HEUSLER ALLOYS; INDUCED STRAIN; ENTROPY CHANGE; TRANSFORMATION; PHASE; MICROSTRUCTURE; NI2MNGA;
D O I：
10.1016/j.actamat.2016.01.041
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Mn-rich Ni-Mn-Sn metamagnetic shape memory alloys exhibiting magnetostructural transformation are of a great potential as the base materials for solid-state refrigeration. With the aim of fine tuning of the transformation characteristics and improving functional properties, in the present work we have fabricated polycrystalline Ni50-xFexMn40Sn10 (x = 0, 2, 4, 6, 8 at.%) melt-spun ribbons, starting from the base alloy with x = 0, which is weakly magnetic in both austenitic and martensitic phases. By exploring martensitic transformation (MT) and magnetic behaviors as a function of Fe doping and magnetic field, we have found that Fe and/or magnetic field reduce the MT temperature and Curie temperature of austenite phase, becoming closer to each other as the Fe-content increases, accompanied by an increase of the magnetic moment of austenite, magnetization jump at MT, transformation volume, and magnetic contribution, Delta S-M, to the total entropy change at MT. The ribbons present moderate values of Delta S-M equal to 11 J kg(-11)K(-1) at 5 T for x = 8, moderate thermal hysteresis (10-14 K) nearly independent of Fe doping or magnetic field, and adjustable structural and magnetic transition temperatures close to room temperature. (C) 2016 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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页码：9 / 16
页数：8
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