Recrystallization Behavior of IF Steel at the Interface of Al Junction

• Okuda Kaneharu

  Steel Research Laboratory, JFE Steel Corporation Department of Materials Science, Graduate School of Engineering, Tohoku University

• Han Kwangsik

  Department of Materials Science, Graduate School of Engineering, Tohoku University National Institute for Materials Science (NIMS)

• Kainuma Ryosuke

  Department of Materials Science, Graduate School of Engineering, Tohoku University

Bibliographic Information

Other Title

• Fe-Al接合界面反応とFeの再結晶挙動
• Fe-Al セツゴウ カイメン ハンノウ ト Fe ノ サイケッショウ キョドウ

Abstract

The recrystallization behavior of a cold-rolled IF steel sheets, which had experienced recrystallization at higher temperature, was investigated at the active interface between IF steel and pure Al, heat-treated at 650ºC. In the region surrounded by the tongue-like η-Fe₂A_l5 phase, the recrystallized structure of the IF steel was characterized by equiaxed structure including subgrains, whereas elongated pancake shaped ferrite was majored in other region. The η phase grew preferentially to the c axis, and the growing η phase distorted the surrounding iron due to the difference in the molar volume; compressive deformation was expected both in the a-axis and b-axis directions, and tensile deformation was expected in the c-axis. The growth of η phase obviously changed the recrystallization behavior of the IF steel. The development of γ-fiber crystalline texture (<111>//ND), which was a typical recrystallization texture of IF steel, was not observed in the region surrounded by tongue-like η phase. The local misorientation in the vicinity of the two-phase interface could not explain the texture change in the region surrounded by the η phase. It was considered that the growth and restraint of the η phase also affected the nucleation of recrystallization.

Journal

• Tetsu-to-Hagane

  Tetsu-to-Hagane 107 (5), 345-355, 2021

  The Iron and Steel Institute of Japan

Keywords

• IF steel
• recrystallization
• η phase
• Al junction
• EBSD

Details

• CRID: 1390569335609754624
• NII Article ID: 130008031467
• NII Book ID: AN00151251
• DOI: 10.2355/tetsutohagane.tetsu-2020-116
• ISSN: 18832954
• ISSN: 00211575
• NDL BIB ID: 031483146
• Web Site: http://id.ndl.go.jp/bib/031483146
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I031483146
• Web Site: https://www.jstage.jst.go.jp/article/tetsutohagane/107/5/107_TETSU-2020-116/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed