On the effect of hydrogen on the elastic moduli and acoustic loss behaviour of Ti-6Al-4V

Driver, S. L. and Jones, N. G. and Stone, H. J. and Rugg, D. and Carpenter, M. A. (2016) On the effect of hydrogen on the elastic moduli and acoustic loss behaviour of Ti-6Al-4V. Philosophical Magazine, 96 (22). pp. 2311-2327. ISSN 1478-6443 (electronic) 1478-6435 (paper) DOI https://doi.org/10.1080/14786435.2016.1198054

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Abstract

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. 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 phase due to different local microstructural constraint by the bounding secondary phase.

Item Type:	Article
Additional Information:	The data for this paper may be found: https://www.repository.cam.ac.uk/handle/1810/256150
Uncontrolled Keywords:	2016AREP, IA71, cml (Rolls Royce plc)
Subjects:	03 - Mineral Sciences
Divisions:	03 - Mineral Sciences 07 - Gold Open Access
Journal or Publication Title:	Philosophical Magazine
Volume:	96
Page Range:	pp. 2311-2327
Identification Number:	https://doi.org/10.1080/14786435.2016.1198054
Depositing User:	Sarah Humbert
Date Deposited:	20 Sep 2016 16:57
Last Modified:	20 Sep 2016 16:57
URI:	http://eprints.esc.cam.ac.uk/id/eprint/3756

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