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Theory of hydrogen-assisted crack growth

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Abstract

A model for hydrogen-induced cracking is proposed and developed on the assumption that hydrogen enters the embrittling process zone (EPZ) ahead of the crack-tip and promotes localized plastic flow which is proportional to its concentration. The formulae of the criterion for crack propagation,K IH, and the crack growth rate dl/dt, are derived and applied to the experimental data of AISI4340 superhigh-strength steels.

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Authors and Affiliations

  1. Beijing Graduate School of North China, Institute of Water Conservancy and Hydropower, 100 044, Beijing, Peoples Republic of China

    Ding Hong-Zhi

  2. Department of Applied Physics, Beijing Institute of Technology, P.O. Box 327, 100 081, Beijing

    Xing Xiu-San

  3. International Centre for Materials Physics, Academia Sinica, 110 015, Shengyang, Peoples Republic of China

    Xing Xiu-San

Authors
  1. Ding Hong-Zhi
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  2. Xing Xiu-San
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Hong-Zhi, D., Xiu-San, X. Theory of hydrogen-assisted crack growth. J Mater Sci 27, 3203–3205 (1992). https://doi.org/10.1007/BF01116012

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  • DOI: https://doi.org/10.1007/BF01116012

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