Structural changes in galvannealed coating during hot-stamping heating

Akihiro Sengoku, Hiroshi Takebayashi, Norihiko Okamoto, Haruyuki Inui

研究成果: Article

1 引用 (Scopus)

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Hot-stamping process is widely applied to coated steel sheets including galvannealed steel sheets (GA) to produce high-strength automobile components. In this study, we investigated the structural changes in galvannealed coating during hot-stamping heating. It was revealed that the original δ1 phase decomposed to the Γ phase and Zn liquid above the peritectic temperature of the δ1 phase, then the Γ phase further decomposed to the Fe-Zn solid-solution and Zn liquid above the peritectic temperature of the Γ phase, and finally the coating changed to a single phase of the Fe-Zn solid-solution. The series of structural changes in GA coating can be explained with the Fe-Zn binary phase diagram.

元の言語English
ページ(範囲)331-337
ページ数7
ジャーナルTetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
104
発行部数6
DOI
出版物ステータスPublished - 2018 6

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Metals and Alloys
  • Materials Chemistry

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