Hydrogen trapping on lattice defects produced by high-pressure torsion in Fe-0.01 mass% C alloy

Yoji Mine, Takayuki Tsumagari, Zenji Horita

    Research output: Contribution to journalArticlepeer-review

    28 Citations (Scopus)

    Abstract

    Hydrogen trapping in Fe-0.01 mass% C with ultrafine-grained structures produced by high-pressure torsion (HPT) was investigated by thermal desorption spectrometry. Hydrogen trapping in body-centred cubic iron was significantly increased by HPT processing through introduction of lattice defects such as vacancies, dislocations and grain boundaries. Decreasing the density of vacancies, dislocations and low-angle grain boundaries by post-HPT annealing is effective in reducing the trapped hydrogen while the hardness remains enhanced through grain refinement with high-angle boundaries.

    Original languageEnglish
    Pages (from-to)552-555
    Number of pages4
    JournalScripta Materialia
    Volume63
    Issue number5
    DOIs
    Publication statusPublished - Sep 1 2010

    All Science Journal Classification (ASJC) codes

    • Materials Science(all)
    • Condensed Matter Physics
    • Mechanics of Materials
    • Mechanical Engineering
    • Metals and Alloys

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