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

Article PDF

Description

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

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

download PDF

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.

Keywords
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

DOI: http://dx.doi.org/10.21741/9781945291678-25

The article was published as article 25 of the book

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

References
[1] M. Peters, J. Kumpfert, C.H. Ward and C. Leyens, TitaniumAlloys for Aerospace Applications, in: Titanium and Titanium Alloys, Advanced Engineering Materials, 5 (2003) 419-427. https://doi.org/10.1002/adem.200310095
[2] I. Gurrapa, Characterization of titanium alloy Ti-6al-4V for chemical, marine and industrial applications, Materials characterization 51 (2003) 131-139. https://doi.org/10.1016/j.matchar.2003.10.006
[3] C.N. Elias, J.H.V. Lima, R. Valiev and M.A. Meyers, Biomedical application of titanium and its alloys, 60 (2008) 46-49.
[4] L. Bonaccorsi, L. Calabrese, A. Pintaudi, E. Proverbio, F. Aliotta, R. Ponterio , A. Scherillo and D. Tresoldi, Reversible hydrogen absorption in a Ti-6Al-4V alloy produced by mechanical alloying, Int. J. Hydrogen Energy, xxx (2014) 1-9. https://doi.org/10.1016/j.ijhydene.2014.07.149
[5] A. López-Súarez, J. Rickards and R.Trejo-Luna, Mechanical and microstructural changes of Ti and Ti-6Al-4V alloy induced by the absorption and desorption of hydrogen, J. Alloys Compd 457 (2008) 216-220. https://doi.org/10.1016/j.jallcom.2007.03.031
[6] A. López-Súarez, Influence of surface roughness on consecutively hydrogen absorption cycles in Ti–6Al–4V alloy, Int. J. Hydrogen Energy 35 (2010) 10404-10411. https://doi.org/10.1016/j.ijhydene.2010.07.163
[7] J.L. Blackburn, P.A. Parilla, T. Gennett, K.E. Hurst, A.C. Dillon and M.J. Heber, J. Alloys Compd, Measurement of the reversible hydrogen storage capacity of milligramTi–6Al–4V alloy samples with temperature programmed desorption and volumetric techniques, 454 (2008) 483-490.
[8] H.G. Nelson, D.P. William and J.E. Stein, Environmental hydrogen embrittlement of an α- titanium alloy: Effect of microstructure, Met. Trans. B 3 (1972) 473-479. https://doi.org/10.1007/BF02642051
[9] L. Miaoquan, Z. Weifu, Z. Tangkui, H. Hongliang and L. Zhigiang, Effect of microstructure of Ti-6Al-4V alloys, Rare materials and Engineering, 39(2010) 0002-0005.
[10] M. Topic, L. Pichon, S. Nsengiyumva, G. Favaro, M. Dubuisson, S. Halindintwali, S.Mazwi, J. Sibanyoni, C. Mtshali and K. Corin, The effect of surface oxidation on hydrogen absorption in Ti-6Al-4V alloy studied by elastic recoil detection analysis (ERDA) and nanohardness techniques, J. Alloys and Compounds 740 (2018) 879-886. https://doi.org/10.1016/j.jallcom.2017.11.269
[11] S. Mazwi, Hydrogen storage in Ti-based coatings and Ti6Al4V alloy, Unpublished, master’s thesis, University of the Western Cape, Cape Town, South Africa.
[12] B. He Bob, Two-Dimensional X-Ray Diffraction, Wiley, 2009.