Abstract
J integral tests, both pure mode I and mixed mode I/III in character, were performed on a high-purity Ni-Cr-Mo-V rotor steel. The steel was tested in the uncharged condition and after gaseous charging with hydrogen to a level of 2 at. ppm. Hydrogen degraded the J integral toughness incrementally by approximately 30 pct with the degree of degradation increasing mode III loading component. The results are discussed in terms of a model in which, augmenting the effect of the mode III loading, hydrogen further increases the tendency for plastic instability in the form of shear bands.
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An erratum to this article is available at http://dx.doi.org/10.1007/BF02804378.
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Gordon, J.A., Hirth, J.P., Kumar, A.M. et al. Effects of hydrogen on the mixed mode I/III toughness of a high-purity rotor steel. Metall Trans A 23, 1013–1020 (1992). https://doi.org/10.1007/BF02675576
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DOI: https://doi.org/10.1007/BF02675576