Orientation Dependence of Cycle Stability of Superelasticity Response in Quenched and Aged Ferromagnetic Co35Ni35Al30 Single Crystals

被引：2
作者：
Eftifeeva, A. S. [1 ]
Panchenko, E. Yu. [1 ]
Chumlyakov, Yu. I. [1 ]
机构：
[1] Tomsk State Univ, Tomsk 634050, Russia
来源：
HIGH TECHNOLOGY: RESEARCH AND APPLICATIONS | 2014年 / 1040卷
关键词：
single crystal; thermoelastic martensitic transformation; superelasticity; disperses particles; cyclic stability; NI-AL SINGLE; MEMORY;
D O I：
10.4028/www.scientific.net/AMR.1040.119
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Using Co35Ni35Al30 (at.%) single crystals, the effects of crystals' axis orientation and ageing at 673 K for 0.5 h in free state on superelasticity responses in compression are investigated. Ageing of these single crystals is found to result in strengthening of the high-temperature B2 phase and L1(0) martensite, twofold increasing of temperature interval of SE response, and weakening of the orientation dependence and improving of the cycle stability of superelasticity response. In [011]- and [123]-oriented single crystals the values of the stress hysteresis decrease nearly threefold as compared to the quenched state. The combination of high-strength [001] crystal axis orientation and precipitation of coherent nanoscale particles leads to the best stability of SE response in aged Co35Ni35Al30 single crystals.
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收藏
页码：119 / 123
页数：5
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