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Influence of hydrogen on the crack resistance of 10Kh15N27T3V2MR steel

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In high ranges of pressure and temperature, hydrogen reduces the thresholds ∆K th, cyclic fracture toughness K fc , and short-term static crack resistance K c of 10Kh15N27T3V2MR austenitic dispersion-hardened steel. Conditions of plane deformation and, correspondingly, conditions of determination of the characteristic K Ic are maintained in testing in the range 293 – 483 K of compact specimens 20 mm thick after their preliminary hydrogenation to a hydrogen content of 8 ppm. Low-cycle fatigue and sizes of the plastic zone under static crack resistance are most sensitive to hydrogen (and decrease by 80 and 70%, respectively, against those in helium), and the cyclic crack resistance parameters ΔK th and K fc (decrease by 25%) are least sensitive to hydrogen. The static crack resistance K c and the percentage reduction in the cross-sectional area ψ in short-term tension are reduced by 50%.

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Authors and Affiliations

  1. Karpenko Physicomechanical Institute, Ukrainian National Academy of Sciences, Lviv, Ukraine

    O. I. Balyts’kyi, L. M. Ivas’kevych, V. M. Mochul’s’kyi & O. M. Holiyan

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  1. O. I. Balyts’kyi
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  2. L. M. Ivas’kevych
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  3. V. M. Mochul’s’kyi
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  4. O. M. Holiyan
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Correspondence to O. I. Balyts’kyi.

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Translated from Fizyko-Khimichna Mekhanika Materialiv, Vol. 45, No. 2, pp. 102–110, March – April, 2009.

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Balyts’kyi, O.I., Ivas’kevych, L.M., Mochul’s’kyi, V.M. et al. Influence of hydrogen on the crack resistance of 10Kh15N27T3V2MR steel. Mater Sci 45, 258–267 (2009). https://doi.org/10.1007/s11003-009-9184-5

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  • DOI: https://doi.org/10.1007/s11003-009-9184-5

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