Superelasticity and shape memory effect under tension and compression in the [001]-oriented crystals of non-equiatomic fenicoalti high entropy alloy | Izvestiya vuzov. Fizika. 2019. № 12. DOI: 10.17223/00213411/62/12/126

Superelasticity and shape memory effect under tension and compression in the [001]-oriented crystals of non-equiatomic fenicoalti high entropy alloy

The effect of g¢-phase dispersed particles on the temperature dependence of stresses for the start of martensitic transformations σ_cr(T), the shape memory effect and superelasticity depending on aging conditions was studied in the [001]-oriented crystals of non-equiatomic Fe-28%Ni-17%Co-11.5%Al-2.5%Ti (at.%) high-entropy alloy at tension/compression. It was shown that σ_cr(T) in the interval of the development of the g-a' stress-induced martensitic transformations does not depend on the deformation method - tension/compression for small g¢-phase particles of the d≤4-6 nm. The value of reversible strain at tension is 3.5-4.5%, and at compression is 1.5%. The reasons for the strong dependence of reversible strain, mechanical hysteresis on the deformation method of tension/compression and particle size are discussed.

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Keywords

монокристаллы сплава на основе железа FeNiCoAlTi, термоупругие мартенситные превращения, эффект памяти формы, сверхэластичность, наноразмерные частицы g¢- фазы, iron-based FeNiCoAlTi alloy single crystals, thermoelastic martensitic transformations, shape memory effect, superelasticity, nanoscale g¢-phase particles

Authors

Name	Organization	E-mail
Chumlyakov Y.I.	V.D. Kuznetsov Siberian Physical-Technical Institute	chum@phys.tsu.ru
Kireeva I.V.	V.D. Kuznetsov Siberian Physical-Technical Institute	kireeva@spti.tsu.ru
Kuksgauzen I.V.	V.D. Kuznetsov Siberian Physical-Technical Institute	irbas@sibmail.com
Poklonov V.V.	V.D. Kuznetsov Siberian Physical-Technical Institute	poklonov_vyacheslav@mail.ru
Pobedennaya Z.V.	V.D. Kuznetsov Siberian Physical-Technical Institute	pobedennaya_zina@mail.ru
Bessonova I.G.	V.D. Kuznetsov Siberian Physical-Technical Institute	79516284172@yandex.rum
Kirillov V.A.	V.D. Kuznetsov Siberian Physical-Technical Institute	vladk@sibmail.com
Lauhoff C.	Institute für Werkstofftechnik, Universität Kassel	lauhoff@uni-kassel.de
Niendorf T.	Institute für Werkstofftechnik, Universität Kassel	niendorf@uni-kassel.de
KROOß P.	Institute für Werkstofftechnik, Universität Kassel	krooss@uni-kassel.de

Всего: 10

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