Superelasticity and Shape Memory Effect Under Tension and Compression in the [001]-Oriented Single Crystals of Non-Equiatomic FeNiCoAlTi High-Entropy Alloy

被引：4
|
作者：
Chumlyakov, Yu. I. [1 ]
Kireeva, I. V. [1 ]
Kuksgauzen, I. V. [1 ]
Poklonov, V. V. [1 ]
Pobedennaya, Z. V. [1 ]
Bessonova, I. G. [1 ]
Kirillov, V. A. [1 ]
Lauhoff, C. [2 ]
Niendorf, T. [2 ]
Krooss, P. [2 ]
机构：
[1] Tomsk State Univ, VD Kuznetsov Siberian Phys Tech Inst, Tomsk, Russia
[2] Univ Kassel, Inst Werkstofftech, Kassel, Germany
来源：
RUSSIAN PHYSICS JOURNAL | 2020年 / 62卷 / 12期
基金：
俄罗斯科学基金会;
关键词：
single crystals of iron-based FeNiCoAlTi alloy; thermoelastic martensitic transformations; shape memory effect; superelasticity; nanosized gamma '-phase particles; TRANSFORMATIONS; BEHAVIOR;
D O I：
10.1007/s11182-020-01980-1
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The effect of gamma '-phase dispersed particles on the temperature dependence of the stresses of the start of martensitic transformations sigma(cr)(T), the shape memory effect, and the superelasticity is investigated depending on aging conditions in the [001]-oriented crystals of the non-equiatomic Fe - 28% Ni - 17% Co - 1.5% Al - 2.5% Ti (at.%) high-entropy alloy under tension/compression. It is shown that sigma(cr)(T) during the gamma-alpha ' stressinduced martensitic transformations is independent of the strain method (tension/compression) for small gamma '- phase particles with sizes d <= 4-6 nm. The value of the reversible strain at tension is 3.5-4.5%, and it is 1.5% at compression. Reasons for strong dependences of the reversible strain and the mechanical hysteresis on the strain method (tension/compression) and particle sizes are discussed.
引用
收藏
页码：2296 / 2305
页数：10
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