| Autor: |
Driver, SL, Jones, NG, Stone, HJ, Rugg, D, Carpenter, MA |
| Přispěvatelé: |
Driver, SL [0000-0003-2151-0221], Jones, NG [0000-0002-1851-2261], Stone, HJ [0000-0002-9753-4441], Apollo - University of Cambridge Repository |
| Jazyk: |
angličtina |
| Rok vydání: |
2016 |
| Předmět: |
|
| Zdroj: |
1478-6443 (electronic) 1478-6435 (paper) |
| Popis: |
The elastic moduli and acoustic loss behaviour of Ti-6Al-4V (wt.%) in the temperature range 5–298 K have been studied using Resonant Ultrasound Spectroscopy. A peak in the acoustic dissipation was observed at 160 K within the frequency range 250–1000 kHz. Analysis of the data acquired in this study, coupled with complementary data from the literature, showed that this was consistent with a Snoek-like relaxation process with an associated activation energy of 23 3 kJ mol$^{−1}$. However, the loss peak was broader than would be expected for a Snoek-like relaxation, and the underlying process was shown to have a spread of relaxation times. It is suggested that this effect arises as a result of variations in the strain experienced by the β phase due to different local microstructural constraint by the bounding secondary α phase. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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