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Effects of Hydrogen on the Fracture Properties of Σ9 and Σ11 Tilt Boundaries in Nickel

Published online by Cambridge University Press:  26 February 2011

J.E. Angelo ,
W.W. Gerberich ,
N.R. Moody  and
S.M. Foiles
J.E. Angelo
Affiliation:
Dept. of CEMS, Univ. of MN, Minneapolis, MN 55455
W.W. Gerberich
Affiliation:
Dept. of CEMS, Univ. of MN, Minneapolis, MN 55455
N.R. Moody
Affiliation:
Sandia National Laboratories, Livermore, CA 94551-0969
S.M. Foiles
Affiliation:
Sandia National Laboratories, Livermore, CA 94551-0969
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Abstract

In this study, the Embedded Atom Method is combined with Monte Carlo and molecular dynamics simulations to study the fracture properties of Σ9 and Σ11 tilt boundaries in nickel. The Monte Carlo simulations are used to simulate the exposure of the bicrystal to a hydrogen environment at 300° C. These simulations establish the equilibrium distribution of hydrogen at the boundaries as a function of far-field concentration. The effect of the hydrogen on the fracture process is then studied with molecular dynamics. It will be shown that the fracture stress of the Σ9 boundary is affected over a wider range of far-field concentrations than the Σ11 boundary, although the Σ11 boundary shows that catastrophic failure occurs when the sample is charged beyond a certain far-field concentration.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 278: Symposium W – Computational Methods in Materials Science , 1992 , 159
Copyright
Copyright © Materials Research Society 1992

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References

1. Moody, N.R., Robinson, S.L., and Perra, M.W., in Hydrogen Effects on Material Behavior, edited by Moody, N.R. and Thompson, A.W. (TMS, Warrendale, PA, 1990) pp.625–35.Google Scholar
2. Gerberich, W.W. and Wright, A.G., in Environmental Demradation of Engineering Materials in Hydrogen, edited by Lothan, M.R., MeNitt, R.P., and Sisson, R.D. (NASA-NACE, Blacksburg, VA, 1981) pp. 183–206.Google Scholar
3. Moody, N.R., Robinson, S.L., and Garrison, W.M., Res Mechanica 30, 143 (1990).Google Scholar
4. Moody, N.R., Perra, M.W., and Robinson, S.L., Scripta Metallurgica 22, 1261 (1988).Google Scholar
5. Daw, M.S. and Baskes, M.I., Phys. Rev. Lett., 50 1285 (1983).Google Scholar
6. Daw, M.S. and Baskes, M.I., Phys. Rev. B, 29 6443 (1984).Google Scholar
7. Daw, M.S., Phys. Rev. B, 32 7441 (1990).Google Scholar
8. Daw, M.S., in Many-Atom Interactions in Solids, edited by Nieminen, R.M, Puska, M.J., and Manninen, M.J., (Springer-Verlag, Berlin, Germany 1990) pp.48–63.Google Scholar
9. Daw, M.S., Baskes, M.I., Bisson, C.L., and Wolfer, W.G., in Modeling Environmental Effects on Crack Growth Processes, edited by Jones, R.H. and Gerberich, W.W., (TMS-AIME, Warrendale, PA 1986) pp.99–124.Google Scholar
10. Moody, N.R. and Foiles, S.M., in Structure/Property Relationships for Metal/Metal Interfaces, edited by Roming, A.D., Fowler, D.E., and Bristowe, P.D., (Mater. Res. Symp. Proc. 229, Pittsburgh, PA 1991) pp.179–185.Google Scholar
11. Moody, N.R. and Foiles, S.M., in Structure/Property Relationships for Metal/Metal Interfaces, edited by Roming, A.D., Fowler, D.E., and Bristowe, P.D., (Mater. Res. Symp. Proc. 229, Pittsburgh, PA 1991) pp.179–185.Google Scholar
12. Foiles, S.M., Phys. Rev. B, 32 7685 (1985).Google Scholar
13. Beeler, J.R., in Radiation Effects Computer Experiments, Defects in Solids Series 13, edited by Amelinckx, S., Gevers, R., and Nihoul, J., (North Holland Publishing Co., New York, NY, 1983).Google Scholar
14. Sutton, A.P. and Vitek, V., Phil. Trans. Roy. Soc. London, A309, pp. 1,37,55 (1983).Google Scholar
15. Lassila, D.H. and Birnbaum, H.K., Acta Metall., 34, 1237 (1986).Google Scholar
16. Windle, A.H. and Smith, G.C., J. Metal Science, 4, 136 (1970).CrossRefGoogle Scholar