Ta/Zr接合界面における水素脆化割れの特徴とZr母材の水素脆化機構 : SUS304ULC/Ta/Zr爆発接合継手の水素脆化に関する研究 Characterisation of Hydrogen Embrittlement Cracking at Ta/Zr Bond Interface and Hydrogen Embrittlement Mechanism of Zr Base Metal : Hydrogen Embrittlement in SUS304ULC/Ta/Zr Explosive Bonded Joint

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In order to clarify the behaviour and mechanism of the hydrogen embrittlement in SUS304ULC/Ta/Zr explosive bonded joint, the hydrogen embrittlement cracking at Ta/Zr bond interface was characterised. Cracks occurred in the Zr substrate along the wavy interface of the hydrogen-charged Ta/Zr joint. The cracking susceptibility increased drastically when the potential of specimen during hydrogen-charging was reduced below the redox potential of hydrogen. γ-ZrH and δ-ZrH were precipitated in the hydrogen-charged Zr and the precipitated γ-ZrH possessed a (0002)<sub>α-Zr</sub>//(11-1)<sub>γ-ZrH</sub>, [21-1-0]<sub>α-Zr</sub>//[110]<sub>γ-ZrH</sub> crystallographic relationship. An <I>in-situ</I> observation of the hydrogen embrittlement cracking with SEM and TEM revealed that cracks were initiated in zirconium hydrides and propagated preferentially along zirconium hydrides. These results suggested that the hydrogen embrittlement mechanism of the Zr base metal was caused by the precipitation of zirconium hydrides and the brittle fracture of them.

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  • 溶接学会論文集 : quarterly journal of the Japan Welding Society

    溶接学会論文集 : quarterly journal of the Japan Welding Society 28(2), 216-221, 2010-12-31

    一般社団法人 溶接学会

参考文献:  19件中 1-19件 を表示

被引用文献:  4件中 1-4件 を表示

各種コード

  • NII論文ID(NAID)
    10030150013
  • NII書誌ID(NCID)
    AN1005067X
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    02884771
  • データ提供元
    CJP書誌  CJP引用  J-STAGE 
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