Skip to main content
placeholder image

Crystallographic texture based analysis of Fe3O4/α-Fe2O3 scale formed on a hot-rolled microalloyed steel

Journal Article


Abstract


  • Oxide scale formed on the strip surface during hot rolling has posed a serious obstacle to ensure a

    defect-free surface of steel products in an ecologically friendly way. Recently, an influential idea is that the

    tertiary oxide scale with a tailored texture can be expected to enhance surface quality and tribolgoical

    properties during particular lubrication. In this study, texture evolutions of magnetite (Fe3O4) and hematite

    (α-Fe2O3) in deformed oxide layers formed on a hot-rolled microalloyed steel were investigated by electron

    back-scattering diffraction (EBSD). Fe3O4 develops a strong θ fibre parallel to the oxide growth, and α-

    Fe2O3 has a dominant {0001}<1010> texture component. This could be explained by surface energy

    minimisation during oxides growth and transformation between two oxides, which can also be affected by

    propagation of cracks along high angle grain boundaries in Fe3O4. Our data further demonstrate that a

    high thickness reduction (>28%) can reduce α-Fe2O3 wedging through Fe3O4 cracks, and tailoring Fe3O4

    texture to {111} components can prevent the α-Fe2O3 growth titling 54.76° from the <001> crystal direction

    of Fe3O4. As such, these means can dramatically alleviate disturbance from ‘red scale’ (α-Fe2O3) during

    high-temperature steel processing.

Authors


  •   Yu, Xianglong (external author)
  •   Jiang, Zhengyi
  •   Zhao, Jingwei
  •   Wei, Dongbin
  •   Zhou, Cunlong (external author)
  •   Huang, Qingxue (external author)

Publication Date


  • 2015

Citation


  • Yu, X., Jiang, Z., Zhao, J., Wei, D., Zhou, C. & Huang, Q. (2015). Crystallographic texture based analysis of Fe3O4/α-Fe2O3 scale formed on a hot-rolled microalloyed steel. ISIJ International, 55 (1), 278-284.

Scopus Eid


  • 2-s2.0-84922574367

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/3438

Number Of Pages


  • 6

Start Page


  • 278

End Page


  • 284

Volume


  • 55

Issue


  • 1

Abstract


  • Oxide scale formed on the strip surface during hot rolling has posed a serious obstacle to ensure a

    defect-free surface of steel products in an ecologically friendly way. Recently, an influential idea is that the

    tertiary oxide scale with a tailored texture can be expected to enhance surface quality and tribolgoical

    properties during particular lubrication. In this study, texture evolutions of magnetite (Fe3O4) and hematite

    (α-Fe2O3) in deformed oxide layers formed on a hot-rolled microalloyed steel were investigated by electron

    back-scattering diffraction (EBSD). Fe3O4 develops a strong θ fibre parallel to the oxide growth, and α-

    Fe2O3 has a dominant {0001}<1010> texture component. This could be explained by surface energy

    minimisation during oxides growth and transformation between two oxides, which can also be affected by

    propagation of cracks along high angle grain boundaries in Fe3O4. Our data further demonstrate that a

    high thickness reduction (>28%) can reduce α-Fe2O3 wedging through Fe3O4 cracks, and tailoring Fe3O4

    texture to {111} components can prevent the α-Fe2O3 growth titling 54.76° from the <001> crystal direction

    of Fe3O4. As such, these means can dramatically alleviate disturbance from ‘red scale’ (α-Fe2O3) during

    high-temperature steel processing.

Authors


  •   Yu, Xianglong (external author)
  •   Jiang, Zhengyi
  •   Zhao, Jingwei
  •   Wei, Dongbin
  •   Zhou, Cunlong (external author)
  •   Huang, Qingxue (external author)

Publication Date


  • 2015

Citation


  • Yu, X., Jiang, Z., Zhao, J., Wei, D., Zhou, C. & Huang, Q. (2015). Crystallographic texture based analysis of Fe3O4/α-Fe2O3 scale formed on a hot-rolled microalloyed steel. ISIJ International, 55 (1), 278-284.

Scopus Eid


  • 2-s2.0-84922574367

Ro Metadata Url


  • http://ro.uow.edu.au/eispapers/3438

Number Of Pages


  • 6

Start Page


  • 278

End Page


  • 284

Volume


  • 55

Issue


  • 1