Superelasticity of [001]-oriented Fe42.6Ni27.9Co17.2Al9.9Nb2.4 ferrous shape memory alloys

SCRIPTA MATERIALIA

卷:120

Article

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

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

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

[3] Univ Houston, Dept Engn Technol, Houston, TX USA

关键词: Shape memory effect;    Tension-compression asymmetry;    Iron-based shape memory alloys;    Magnetic shape memory alloys;    Martensitic transformation;   

DOI  :  10.1016/j.scriptamat.2016.04.008

来源: Elsevier

【 摘 要 】

The shape memory properties of a ferrous single crystalline alloy, FeNiCoAlNb, were investigated along the [100] orientation by superelasticity tests in both tension and compression. Aging was used to form nano-size precipitates to demonstrate and tailor their shape memory properties. After aging at 700 degrees C for 3 h, [001]-oriented FeNiCoAlNb shows high compression-tension asymmetry and shape recovery of about 4.5% in tension and 8.8% in compression. The superelastic behavior of [001]-oriented FeNiCoAlNb is weakly temperature dependent due to large transformation strain. FeNiCoAlNb has great potential for temperature independent and large scale actuator applications. (C) 2016 Elsevier Ltd. All rights reserved.

【 授权许可】

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