In situ Synchrotron X-Ray Measurement of Strain Fields near Fatigue Cracks grown in Hydrogen

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In situ Synchrotron X-Ray Measurement of Strain Fields near Fatigue Cracks grown in Hydrogen

M. Connolly, P. Bradley, A. Slifka, D. Lauria, E. Drexler

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The embrittlement and enhanced fatigue crack growth rate of metals in the presence of hydrogen is a long-standing problem [1-5]. In an effort to determine the dominant damage mechanism behind hydrogen-assisted fatigue crack growth, we performed high-energy x-ray diffraction (HEXRD) measurements to characterize the strain fields near cracks grown both in air, as well as in a hydrogen environment. An enhancement in the magnitude and spatial extent of the strain field near the crack grown in hydrogen compared with the strain field near the crack grown in air was observed. We discuss the differences between the measured in-air and in-hydrogen crack-tip strain fields in the context of the two leading damage mechanisms proposed in the literature.

Keywords
Strain, Hydrogen, Fracture, Fatigue, Synchrotron, Diffraction

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: M. Connolly, P. Bradley, A. Slifka, D. Lauria, E. Drexler, ‘In situ Synchrotron X-Ray Measurement of Strain Fields near Fatigue Cracks grown in Hydrogen’, Materials Research Proceedings, Vol. 4, pp 17-22, 2018

DOI: http://dx.doi.org/10.21741/9781945291678-3

The article was published as article 3 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] J.R. Fekete, J.W. Sowards, R.L. Amaro, Economic impact of applying high strength steels in hydrogen gas pipelines, International Journal of Hydrogen Energy 40(33) (2015) 10547-10558. https://doi.org/10.1016/j.ijhydene.2015.06.090
[2] W.C. Leighty, J. Holloway, R. Merer, G. Keith, D.E. White, Compressorless hydrogen transmission pipelines deliver large-scale stranded renewable energy at competitive cost, Proceedings of the 23rd World Gas Conference (2006).
[3] A.J. Slifka, E.S. Drexler, N.E.Nanninga, Y.S. Levy, J.D. McColskey, R.L. Amaro, A.E. Stevenson, Fatigue crack growth of two pipeline steels in a pressurized hydrogen environment, Corrosion Science 78 (2014) 313-321. https://doi.org/10.1016/j.corsci.2013.10.014
[4] N.E. Nanninga, Y.S. Levy, E.S. Drexler, R.T. Condon, A.E. Stevenson, A.J. Slifka, Comparison of hydrogen embrittlement in three pipeline steels in high pressure gaseous hydrogen environments, Corrosion Science 59 (2012) 1-9. https://doi.org/10.1016/j.corsci.2012.01.028
[5] R.L. Amaro, N. Rustagi, K.O. Findley, E.S. Drexler, A.J. Slifka, Modeling the fatigue crack growth of X100 pipeline steel in gaseous hydrogen, International Journal of Fatigue 59 (2014) 262-271. https://doi.org/10.1016/j.ijfatigue.2013.08.010
[6] R.A. Oriani, A mechanistic theory of hydrogen embrittlement of steels, Berichte der Bunsengesellschaft für physikalische Chemie 76(8) (1972) 848-857.
[7] P.P. Darcis, J.D. McColskey, A.N. Lasseigne, T.A. Siewert, Hydrogen effects on fatigue crack growth rate in high strength pipeline steel, Effects of Hydrogen on Materials: Proceedings of the 2008 International Hydrogen Conference (2009) 381.
[8] T. Tabata, H.K Birnbaum, Direct observations of the effect of hydrogen on the behavior of dislocations in iron, Scripta Metallurgica 17(7) (1983) 947-950. https://doi.org/10.1016/0036-9748(83)90268-5
[9] H.K. Birnbaum, P. Sofronis Hydrogen-enhanced localized plasticity—a mechanism for hydrogen-related fracture, Materials Science and Engineering: A 176(1-2) (1994) 191-202. https://doi.org/10.1016/0921-5093(94)90975-X
[10] I.M. Robertson, P. Sofronis, A. Nagao, M.L. Martin, S. Wang, D.W. Gross, K.E. Nygren, Hydrogen embrittlement understood, Metallurgical and Materials Transactions A 46(6) (2015) 2323-2341. https://doi.org/10.1007/s11661-015-2836-1
[11] M.J. Connolly, P.E. Bradley, A.J. Slifka, E.S. Drexler, Chamber for mechanical testing in H2 with observation by neutron scattering, Review of Scientific Instruments 88(6) (2017) 063901. https://doi.org/10.1063/1.4986471
[12] J. Almer, Advanced Photon Source. Retrieved July 20, 2017, from https://www1.aps.anl.gov/sector-1/1-id
[13] A.S. Gill, Z. Zhou, U. Lienert, J. Almer, D.F Lahrman, S.R. Mannava, V.K. Vasudevan, High spatial resolution, high energy synchrotron x-ray diffraction characterization of residual strains and stresses in laser shock peened Inconel 718SPF alloy, Journal of Applied Physics 111(8) (2012) 084904. https://doi.org/10.1063/1.3702890
[14] G.L. Nash, H. Choo, P. Nash, L.L. Daemen, A.M. Bourke, Lattice Dilation in a Hydrogen Charged Steel, International Centre for Diffraction Data. Advances in X-ray Analysis (2003) 238-239.
[15] H. Proudhon, J.Y. Buffière, S. Fouvry, Three-dimensional study of a fretting crack using synchrotron X-ray micro-tomography, Engineering Fracture Mechanics 74(5) (2007) 782-793. https://doi.org/10.1016/j.engfracmech.2006.06.019
[16] Anderson, T. L. (2017). Fracture mechanics: fundamentals and applications, second ed., CRC press, Boca Raton, 1995.
[17] ASTM International, Standard test method for measurement of fatigue crack growth rates. (2011)