Influence of intermetallic particles on the initiation and growth behavior of hydrogen micropores during high-temperature exposure in Al-Zn-Mg-Cu aluminum alloys

Hang Su, Shahnewaz Bhuiyan, Hiroyuki Toda, Kentaro Uesugi, Akihisa Takeuchi, Yoshio Watanabe

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

X-ray tomography is employed to observe the effects of intermetallic compound particles on the nucleation and growth of hydrogen micropores at high temperatures in Al-Zn-Mg-Cu aluminum alloys. Hydrogen micropores are heterogeneously nucleated on particles during exposure at 748 K. Growth and coalescence of the hydrogen micropores are observed with increasing exposure time. Interactions between hydrogen micropores and particles have a significant influence on the growth and coalescence of hydrogen micro pores. The growth speed of hydrogen micropores, nucleated on spherical, small particles is faster than those on other nucleation sites.

Original languageEnglish
Pages (from-to)19-23
Number of pages5
JournalScripta Materialia
Volume135
DOIs
Publication statusPublished - Jul 1 2017

All Science Journal Classification (ASJC) codes

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

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