Effect of marforming on superelasticity and shape memory effect of [001]-oriented Ni50.3Ti49.7 alloy single crystals under compression
| Autor: | Z. V. Pobedennaya, A.V. Vyrodova, A. A. Saraeva, Irina Kireeva, Y.I. Chumlyakov |
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| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: |
Quenching
Materials science эффект памяти формы Mechanical Engineering Alloy Metals and Alloys Shape-memory alloy engineering.material деформация монокристаллы Annealing (glass) Hysteresis Mechanics of Materials Martensite Pseudoelasticity сверхэластичность Materials Chemistry engineering Deformation (engineering) Composite material cжатие |
| Zdroj: | Journal of alloys and compounds. 2022. Vol. 896. P. 162841 (1-9) |
| Popis: | The shape memory effect (SME) and superelasticity (SE) of Ni50.3Ti49.7 alloy single crystals were studied after quenching and marforming (deformation in the martensite phase, followed by annealing at 713 K for 0.5 h) along the [001] direction, under compression, in the high-temperature B2 phase. It was shown that marforming leads to the following: strengthening of the high-temperature B2-phase; an increase in the temperature range of SE; a decrease in the mechanical Δσ and thermal ΔТh hysteresis; and an increase in the transformation hardening coefficient Θ=dσ/de, in comparison with the crystals after quenching. The reasons for improvements in the functional properties of [001]-oriented single crystals after marforming are discussed. |
| Databáze: | OpenAIRE |
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