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Orientation dependence of the shape memory effect and superelasticity in ferromagnetic Co49Ni21Ga30 single crystals with γ'-phase particles I. V. Kuksgauzen, I. V. Kireeva, Y. I. Chumlyakov, H. Maier

Contributor(s): Kuksgauzen, Irina V | Chumlyakov, Yuri I | Maier, Hans Jürgen | Kireeva, Irina V. физикMaterial type: ArticleArticleSubject(s): память формы | сверхэластичность | ферромагнитные сплавыGenre/Form: статьи в журналах Online resources: Click here to access online In: IOP Conference Series: Materials Science and Engineering Vol. 93. P. 012033 (1-6)Abstract: This paper reports on the orientation dependence of the shape memory effect and superelasticity in [001] and [overline 123] single-phase and aged at 623K, 1 hour single crystals of ferromagnetic Co49Ni21Ga30 (at.%) alloy with B2-L10 martensitic transformation. It was demonstrated that in single-phase crystals the values of reversible strain and the values of thermal and stress hysteresis depend on the crystal orientation. Precipitation of γ'-phase particles reduces the value of the shape memory effect and superelasticity and reduces their orientation dependence, increases the thermal and stress hysteresis in comparison with singlephase crystals.
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This paper reports on the orientation dependence of the shape memory effect and superelasticity in [001] and [overline 123] single-phase and aged at 623K, 1 hour single crystals of ferromagnetic Co49Ni21Ga30 (at.%) alloy with B2-L10 martensitic transformation. It was demonstrated that in single-phase crystals the values of reversible strain and the values of thermal and stress hysteresis depend on the crystal orientation. Precipitation of γ'-phase particles reduces the value of the shape memory effect and superelasticity and reduces their orientation dependence, increases the thermal and stress hysteresis in comparison with singlephase crystals.

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