Effects of shot-peening on permeation and retention behaviors of hydrogen in alpha iron

Teppei Otsuka, Kengo Goto, Akihiro Yamamoto, Kenichi Hashizume

Research output: Contribution to journalArticle

Abstract

Effects of the shot-peening on hydrogen permeation and retention behaviors were examined by applying tritium tracer techniques to the gas-driven hydrogen permeation experiments. Hydrogen permeability in shot-peened iron was reduced by a factor of ten in comparison with the as-received iron at lower temperatures of 298 K and 453 K. The effects were disappeared at higher temperatures than 473 K. Hydrogen was trapped at least two trapping sites induced by the shot-peening treatment. The amount of trapped hydrogen in the shot-peened surface was three times larger than that in the normal surface of the as-received iron.

Original languageEnglish
Pages (from-to)509-512
Number of pages4
JournalFusion Engineering and Design
Volume136
DOIs
Publication statusPublished - Nov 2018

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Nuclear Energy and Engineering
  • Materials Science(all)
  • Mechanical Engineering

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