Effect of warm rolling on the martensite transformation temperatures, shape memory effect, and superelasticity in Ti49.2Ni50.8 alloy

Лотков, А. И.; Zhapova, Dorzhima; Гришков, В. Н.; Cherniavsky, A.; Timkin, Victor

doi:10.1063/1.4966430

Cited by 4 publications

(2 citation statements)

References 9 publications

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“…Погрешности измерения исследуемых величин линейно зависели от величины заданной деформации и составляли при γ t = 38.7% γ SE = 0.4%, γ SME = 0.3% и γ r p = 0.2%. Более подробно схема проведения изотермических циклов τ −γ представлена в работе [9].…”

Section: поступило в редакцию 13 июля 2018 гunclassified

Влияние Пластической Деформации В Мартенситном Состоянии На Развитие Эффектов Сверхэластичности И Памяти Формы В Сплавах На Основе Никелида Титана

Лотков¹,

Гришков²,

Жапова³

et al. 2018

Письма В Журнал Технической Физики

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The superelasticity and shape memory effects upon torsional straining of samples of the binary titanium nickelide based alloy with the B 19' martensitic phase structure have been investigated. It has been found that, in samples plastically strained during their loading up to a specified torsional strain of ~39%, the superelasticity value can attain 6.3%, which is comparable with the classical superelasticity effect. The superelasticity manifestation in the martensitic state upon torsion straining of the samples has been compared with the results of similar studies on tensile straining of the titanium nickelide-based alloy samples.

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Section: поступило в редакцию 13 июля 2018 гunclassified

Влияние Пластической Деформации В Мартенситном Состоянии На Развитие Эффектов Сверхэластичности И Памяти Формы В Сплавах На Основе Никелида Титана

Лотков¹,

Гришков²,

Жапова³

et al. 2018

Письма В Журнал Технической Физики

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“…However, reversible inelastic strains 1.5-2 times higher than the above limit have been found in TiNi-based alloys [16][17][18][19][20][21][22][23] after bending [15][16][17][18]20], torsion [20][21][22][23], and tension [19], with the total strain comprising an inelastic and a plastic component. For example, a reversible inelastic strain of up to 18% is attainable in Ti 49.…”

Section: Introductionmentioning

confidence: 99%

Behavior of Inelastic and Plastic Strains in Coarse-Grained Ti49.3Ni50.7(at%) Alloy Deformed in B2 States

Zhapova

Гришков

Лотков

et al. 2021

Metals

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The regularities of the change in inelastic strain in coarse-grained samples of the Ti49.3Ni50.7 (at%) alloy are studied when the samples are given torsional strain in the state of the high-temperature B2 phase. During cooling and heating, the investigated samples underwent the B2-B19′ martensite transformation (MT); the temperature of the end of the reverse MT was Af = 273 K. It was found that at the temperature of isothermal cycles ”loading-unloading” Af + 8 K, when the specimen is assigned a strain of 4%, the effect of superelasticity is observed. With an increase in the torsional strain, the shape memory effect is clearly manifested. It is assumed that the stabilization of the В19′ phase in unloaded samples is due to the appearance of dislocations during deformation due to high internal stresses at the interphase boundaries of the В2 phase and the martensite phase during MT. The appearance of dislocations during the loading of samples near the temperatures of forward and reverse MT can also be facilitated by the “softening” of the elastic moduli of the alloy in this temperature range. At a test temperature above Af + 26 K, the superelasticity effect dominates in the studied samples.

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Study of the superelasticity effect magnitude depending on the strength characteristics of coarse-grained samples of the Ti49.3Ni50.7 (at %) alloy in the absence of plastic deformation

Zhapova¹,

Gusarenko²,

Rodionov³

2022

Proceedings of the International Conference “Physical Mesomechanics. Materials With Multilevel Hierarchical Structure and Intel

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Effect of warm rolling on the martensite transformation temperatures, shape memory effect, and superelasticity in Ti49.2Ni50.8 alloy

Cited by 4 publications

References 9 publications

Влияние Пластической Деформации В Мартенситном Состоянии На Развитие Эффектов Сверхэластичности И Памяти Формы В Сплавах На Основе Никелида Титана

Влияние Пластической Деформации В Мартенситном Состоянии На Развитие Эффектов Сверхэластичности И Памяти Формы В Сплавах На Основе Никелида Титана

Behavior of Inelastic and Plastic Strains in Coarse-Grained Ti49.3Ni50.7(at%) Alloy Deformed in B2 States

Study of the superelasticity effect magnitude depending on the strength characteristics of coarse-grained samples of the Ti49.3Ni50.7 (at %) alloy in the absence of plastic deformation

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