Influence of Hydrogenation on Residual Stresses in Oxygen-Implanted Ti-6Al-4V Alloy

Influence of Hydrogenation on Residual Stresses in Oxygen-Implanted Ti-6Al-4V Alloy

S. Nsengiyumva, T.P. Ntsoane, M. Topic, L. Pichon

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We report the influence of hydrogenation on residual stresses in an oxygen-implanted Ti-6Al-4V alloy. Prior to hydrogenation, oxygen ions were implanted in Ti-6Al-4V samples at fluence 3×1017 ions/cm2 with energies of 50 keV at room temperature and 550°C and 100 keV and 150 keV at 550°C. Hydrogenation was carried out on all samples at 550°C for two hours. Residual stresses were analysed by X-ray diffraction using the sin2ψ method and components of in-plane principal stresses were determined. Our results show compressive stress relaxation in all samples implanted with 50, 100 and 150 keV at 550°C as compared to unimplanted sample. Subsequent to hydrogenation, a stress shift to tensile side is observed in all implanted samples at 550°C.

Titanium Alloy, Oxygen Implantation, Hydrogenation, 2D XRD, Principal Stress

Published online 4/20/2018, 6 pages
Copyright © 2018 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: S. Nsengiyumva, T.P. Ntsoane, M. Topic, L. Pichon, ‘Influence of Hydrogenation on Residual Stresses in Oxygen-Implanted Ti-6Al-4V Alloy’, Materials Research Proceedings, Vol. 4, pp 163-168, 2018


The article was published as article 25 of the book

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