One-way and two-way shape memory effect in ferromagnetic NiFe-GaCo single crystals

被引：12
|
作者：
Timofeeva, E. E. [1 ]
Panchenko, E. Yu. [1 ]
Chumlyakov, Yu. I. [1 ]
Vetoshkina, N. G. [1 ]
Maier, H. J. [2 ]
机构：
[1] Tomsk State Univ, Tomsk 634050, Russia
[2] Univ Hannover, Inst Werkstoffkunde Mat Sci, D-30823 Garbsen, Germany
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2015年 / 640卷
基金：
俄罗斯基础研究基金会;
关键词：
Martensitic transformations; Shape memory; Aging; Thermomechanical processing; Intermetallics; MARTENSITIC TRANSFORMATIONS; ALLOYS; STRESS;
D O I：
10.1016/j.msea.2015.06.024
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The effects of stress-free and stress-assisted aging at 673 K for 4 h on the one-way and two-way shape memory effect (TWSME) in ferromagnetic Ni49Fe18Ga27Co6 (at%) single crystals were investigated. Thermal cycling in the interval of stress-induced martensitic transformation was used to induce a two-way shape memory effect. A large reversible TWSME strain of up to 4.5% was observed after stress-assisted aging, which is attributed to the selection of certain precipitate variants and the corresponding favorably oriented internal stress fields formed. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：465 / 470
页数：6
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