Assessment of hydrogen accumulation behavior in AlZnMg alloy under strain with Kelvin force microscopy

Hiro Fujihara, Hiroyuki Toda, Makoto Arita, Kazuyuki Shimizu, Akihisa Takeuchi, Kentaro Uesugi

Research output: Contribution to journalArticlepeer-review

Abstract

Hydrogen embrittlement in aluminum alloys occurs due to local hydrogen accumulation during deformation. Investigating hydrogen diffusion with plastic deformation can help researchers further understand hydrogen embrittlement behavior in terms of its occurrence condition. We assessed hydrogen accumulation behavior in AlZnMg alloys under strain by combining tensile testing with Kelvin force microscopy. Additionally, the effects of microstructures on hydrogen accumulation were analyzed in detail. Hydrogen accumulated around specific grain boundaries, and it was likely that accumulated hydrogen was repartitioned to the generated vacancies, due to deformation, and the precipitate interfaces.

Original languageEnglish
Pages (from-to)636-641
Number of pages6
JournalMaterials Transactions
Volume62
Issue number5
DOIs
Publication statusPublished - 2021

All Science Journal Classification (ASJC) codes

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

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