The Effect of Low-Temperature Heat Treatment on the Superelasticity in Ti–50.6 at % Ni Single Crystals
| Autor: | A.S. Eftifeeva, E. Yu. Panchenko, N. Yu. Surikov, E. I. Yanushonite, E. E. Timofeeva, Yu. I. Chumlyakov, A. I. Tagiltsev, A. B. Tokhmetova |
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| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Materials science Physics and Astronomy (miscellaneous) Precipitation (chemistry) R-Phase Analytical chemistry 02 engineering and technology 021001 nanoscience & nanotechnology Compression (physics) 01 natural sciences Diffusionless transformation Phase (matter) Martensite 0103 physical sciences Pseudoelasticity 0210 nano-technology Nanoscopic scale |
| Zdroj: | Technical Physics Letters. 45:115-118 |
| ISSN: | 1090-6533 1063-7850 |
| Popis: | As a result of low-temperature aging at 573 K for 1.5 h of Ti–50.6 at% Ni [001]-oriented single crystals quenched from 1253 K, a high-strength state is obtained due to the precipitation of Ti3Ni4 nanoscale particles (d < 10 nm). The aging leads to the development of the B2–B19' martensitic transformation through an intermediate R phase, a reduction in the B19' martensite formation temperatures by 40–60 K, an increase in the strength properties of the B2 phase from 730 to 2100 MPa, and an extension of the superelasticity interval ΔTSE in compression from ΔTSE = 60 to 170 K (compared to quenched crystals). |
| Databáze: | OpenAIRE |
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