Compression deformability of Γ and ζ Fe-Zn intermetallics to mitigate detachment of brittle intermetallic coating of galvannealed steels

Norihiko L. Okamoto, Daisuke Kashioka, Masahiro Inomoto, Haruyuki Inui, Hiroshi Takebayashi, Shu Yamaguchi

Research output: Contribution to journalArticlepeer-review

56 Citations (Scopus)

Abstract

Micropillar compression tests on each of the five intermetallic phases of the Fe-Zn system, which constitute the coating of galvannealed steels, have revealed that the Γ phase formed in direct contact with the steel substrate and the ζ phase formed on the outermost surface are ductile, sandwiching the other three brittle phases (Γ1, δ1k and δ1p). Compression deformability of these ductile phases is considered to mitigate the coating failure through sustaining ruptured fragments of the brittle phases during the forming process.

Original languageEnglish
Pages (from-to)307-310
Number of pages4
JournalScripta Materialia
Volume69
Issue number4
DOIs
Publication statusPublished - 2013 Aug
Externally publishedYes

Keywords

  • Compression test
  • Focused ion beam (FIB)
  • Iron alloys
  • Multilayers
  • Plastic deformation

ASJC Scopus subject areas

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

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