Nucleation of the primary Al phase on TiAl3 during solidification in hot-dip Zn-11%Al-3%Mg-0.2%Si-coated steel sheet

• Honda Kazuhiko

  Kimitsu R&D Lab, Technical Development Bureau, Nippon Steel Corp.

• Ushioda Kohsaku

  Kimitsu R&D Lab, Technical Development Bureau, Nippon Steel Corp.

• Yamada Wataru

  Kimitsu R&D Lab, Technical Development Bureau, Nippon Steel Corp.

• Tanaka Koki

  Advanced Technology Research Lab, Technical Development Bureau, Nippon Steel Corp.

• Hatanaka Hidetoshi

  Kimitsu Works, Nippon Steel Corp.

書誌事項

タイトル別名

• Nucleation of the Primary Al Phase on TiAl<SUB>3</SUB> during Solidification in Hot-Dip Zn-11%Al-3%Mg-0.2%Si-Coated Steel Sheet

抄録

The solidification structure of a hot-dip Zn-11%Al-3%Mg-0.2%Si coated steel sheet with a slight Ti addition was investigated by EBSD. In every center of the primary Al phase of the alloy-coating layer, TiAl₃ was observed by a scanning electron microscope, which suggests that TiAl₃ acts as a heterogeneous nucleation site of the primary Al phase. The latter was revealed to have perfect lattice coherency with the nucleus TiAl₃ phase. The crystal orientation relationships between TiAl₃ and the primary Al are (001)_TiAl<SUB>3</SUB>||(001)_Al and [100]_TiAl<SUB>3</SUB>||[100]_Al, (100)_TiAl<SUB>3</SUB>||(001)_Al and [001]_TiAl<SUB>3</SUB>||[100]_Al, (102)_TiAl<SUB>3</SUB>||(110)_Al and [\\bar201]_TiAl<SUB>3</SUB>||[\\bar110]_Al, (110)_TiAl<SUB>3</SUB>||(110)_Al and [\\bar110]_TiAl<SUB>3</SUB>||[\\bar110]_Al, indicating that the primary Al phase grows in an epitaxial manner from the nucleus TiAl₃ phase. The planar disregistry δ between the two phases was calculated to be less than 5%, owing to this good lattice coherency. The TiAl₃ phase is considered to decrease the degree of undercooling necessary for the nucleation of the primary Al phase.

収録刊行物

• MATERIALS TRANSACTIONS

  MATERIALS TRANSACTIONS 49 (6), 1401-1409, 2008

  公益社団法人 日本金属学会

キーワード

• zinc-aluminium-magnesium-silicon alloy-coated steel sheet
• aluminium
• titanium aluminium alloy
• nucleation
• electron back scattering diffraction pattern
• lattice coherency
• planar disregistry

詳細情報

• CRID: 1390282679226118528
• NII論文ID: 10021147710
• NII書誌ID: AA1151294X
• DOI: 10.2320/matertrans.mra2008010
• ISSN: 13475320
• ISSN: 13459678
• NDL書誌ID: 9519470
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I9519470
• Web Site: https://www.jstage.jst.go.jp/article/matertrans/49/6/49_MRA2008010/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可