Shape memory effect and superelasticity of NiMnCoIn metamagnetic shape memory alloys under high magnetic field

SCRIPTA MATERIALIA

卷:111

Article

Turabi, A. S.¹  Karaca, H. E.¹  Tobe, H.¹  Basaran, B.²  Aydogdu, Y.³  Chumlyakov, Y. I.⁴ 

[1] Univ Kentucky, Dept Mech Engn, Lexington, KY 40506 USA

[2] Univ Houston, Dept Engn Technol, Houston, TX 77204 USA

[3] Gazi Univ, Dept Phys, TR-06500 Ankara, Turkey

[4] Tomsk State Univ, Siberian Phys Tech Inst, Tomsk 634050, Russia

关键词: Shape-memory materials;    Metamagnetic;    Zeeman energy;    Magnetostress;    Actuation;   

DOI  :  10.1016/j.scriptamat.2015.08.027

来源: Elsevier

【 摘 要 】

The effects of the magnetic field on the shape memory behavior of [001]-oriented metamagnetic NiMnCoIn shape memory single crystals were investigated. Thermal cycling under constant stress and magnetic field, and stress cycling under constant magnetic field tests were conducted to understand their magneto-thermo-mechanical behavior. It was observed that critical stress during the superelastic behavior increased and transformation temperatures decreased with the applied field. Under 9 T applied field, compared to all magnetic shape memory alloys, an ultrahigh magnetostress level of 71 MPa was observed during the stress cycling experiments and transformation temperatures were decreased by 16 degrees C during the thermal cycling under stress. (C) 2015 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

【 授权许可】

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