Regularities of orientation dependence of superelasticity and elastocaloric effect in single crystals of Ni₅₄Fe₁₉Ga₂₇ and textured polycrystals of (Ni₅₄Fe₁₉Ga₂₇)_99.7B_0.3 alloy | Izvestiya vuzov. Fizika. 2025. № 8. DOI: 10.17223/00213411/68/8/4

Regularities of orientation dependence of superelasticity and elastocaloric effect in single crystals of Ni₅₄Fe₁₉Ga₂₇ and textured polycrystals of (Ni₅₄Fe₁₉Ga₂₇)_99.7B_0.3 alloy

In this work, the regularities and physical causes of the orientation dependence of elastocaloric effect, strength properties of L 10-martensite, and superelasticity parameters are installed in [001]A-, [011]A- and [334]A-oriented single crystals of Ni54Fe19Ga27 alloy. It is shown that high strength properties of L 10-martensite (dislocation yield strength σ0.1M > 1000 MPa) contribute to manifestation of the maximum value of adiabatic cooling ΔTad = (10.3±0.5) K in [001]A-oriented single crystals and ΔTad = (9.3±0.5) K in polycrystals of (Ni54Fe19Ga27)99.7B0.3 alloy with a sharp texture along the [001]A-direction.

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Keywords

single crystals, polycrystals, martensitic transformation, orientation dependence, elastocaloric effect

Authors

Name	Organization	E-mail
Yanushonite Eleonora I.	Tomsk State University	yanushonite98@mail.tsu.ru
Panchenko Elena Yu.	Tomsk State University	panchenko@mail.tsu.ru
Kurlevskaya Irina D.	Tomsk State University	kurlevskayaID@mail.tsu.ru
Eftifeeva Anna S.	Tomsk State University	a.s.eftifeeva@mail.tsu.ru
Chumlyakov Yuriy I.	Tomsk State University	chum@phys.tsu.ru

Всего: 5

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