Hydrogen embrittlement on fracture resistance of low-alloy reactor pressure vessel steel with high dynamic strain aging at 288 °C

Z. Que (Corresponding Author), H. P. Seifert, V. Mazánová, P. Spätig

    Research output: Contribution to journalArticleScientificpeer-review

    Abstract

    Fracture mechanics tests in hydrogenated high-temperature water at 288 °C on low-alloy reactor pressure vessel steel with high dynamic strain aging (DSA) susceptibility revealed reduced fracture resistance, accelerated crack growth and increased quasi-cleavage appearance than test in high-temperature air. Hydrogen-induced softening by HESIV and HELP concur in synergy with DSA at 288 °C, which was evidenced by crack-tip microstructural characterisations.

    Original languageEnglish
    Article number131269
    JournalMaterials Letters
    Volume308
    Early online date15 Nov 2021
    DOIs
    Publication statusE-pub ahead of print - 15 Nov 2021
    MoE publication typeA1 Journal article-refereed

    Keywords

    • Characterisation
    • Dynamic strain aging
    • Hydrogen embrittlement
    • Low-alloy steel

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