Behaviour and Mechanism of Hydrogen Embrittlement Cracking at Ta/Zr Bond Interface during Underwater Polishing Process - Hydrogen Embrittlement in SUS304ULC/Ta/Zr Explosive Bonded Joint -

DOI 3 Citations 22 References

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  • 水中研磨過程でのＴａ／Ｚｒ界面の水素脆化割れ現象と水素脆化機構　　‐ＳＵＳ３０４ＵＬＣ／Ｔａ／Ｚｒ爆発接合継手の水素脆化に関する研究‐
  • Behaviour and Mechanism of Hydrogen Embrittlement Cracking at Ta/Zr Bond Interface during Underwater Polishing Process
  • - Hydrogen Embrittlement in SUS304ULC/Ta/Zr Explosive Bonded Joint -
  • －SUS304ULC/Ta/Zr爆発接合継手の水素脆化に関する研究－

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Abstract

Hydrogen embrittlement cracking behaviours of SUS304/Ta/Zr explosive bonded joint during underwater polishing were investigated. Hydrogen embrittlement cracks occurred in the Zr substrate adjacent to the Ta/Zr bond interface during underwater polishing. The open circuit potential of Zr during underwater polishing was drastically reduced immediately after mechanical polishing (within a fraction of a second). The hydrogen yields of Zr-Ta alloys and cold-worked Zr during underwater polishing were estimated from the corrosion current determined by the Tafel extrapolation method. The hydrogen yield increased with a decrease in the Ta content of Zr-Ta alloy, and with an increase in the degree of working (rolling reduction) of Zr. It was deduced that the mechanical grinding in water removing the passive oxide film on the Zr substrate led to the hydrogen absorption into the Zr substrate and the precipitation of zirconium hydrides. Accordingly, hydrogen embrittlement cracks occurred in the deformation layer of Zr around the Ta/Zr bond interface due to the tensile residual stress in the explosive bonded joint.

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Details 詳細情報について

  • CRID
    1390001204726468224
  • NII Article ID
    10030150051
  • NII Book ID
    AN1005067X
  • DOI
    10.2207/qjjws.28.230
  • ISSN
    24348252
    02884771
  • Text Lang
    ja
  • Data Source
    • JaLC
    • Crossref
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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