Mechanism of hydrogen embrittlement due to the interaction of a crack, moving dislocations and hydrogen cluster

S. Taketomi, A. T. Yokobori, T. Shoji

    Research output: Contribution to journalConference article

    3 Citations (Scopus)

    Abstract

    Previously, we proposed stress corrosion cracking model on the basis of interaction of dislocation and hydrogen around a crack tip to predict discontinuous cleavage-like fracture during stress corrosion cracking (SCC) for ductile fcc alloys. Furthermore, we conducted numerical analyses using this proposed model. In the analysis, hydrogen was treated as a static cluster. However, actually, both of hydrogen and dislocations move with interaction each other. Therefore, in this paper, a physical model of dislocation and hydrogen dynamics with interaction was proposed. And the behavior of interaction between dynamic dislocations and hydrogen was investigated. On the basis of this analysis, the discontinuous cleavage-like fracture during SCC for ductile fee alloys was clarified.

    Original languageEnglish
    Pages (from-to)937-942
    Number of pages6
    JournalKey Engineering Materials
    Volume261-263
    Issue numberII
    Publication statusPublished - 2004 Jan 1
    EventAdvances in Fracture and Failure Prevention: Proceedings of the Fifth International Conference on Fracture and Strength of Solids (FEOFS2003): Second International Conference on Physics and Chemistry of Fracture and Failure Prevention (2nd ICPCF) - Sendai, Japan
    Duration: 2003 Oct 202003 Oct 22

    Keywords

    • Dislocation dynamics
    • Hydrogen diffusion
    • Hydrogen embrittlement
    • Quasi-cleavage fracture
    • Stress corrosion

    ASJC Scopus subject areas

    • Materials Science(all)
    • Mechanics of Materials
    • Mechanical Engineering

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