EBSD analysis of magnesium addition on inclusion formation in SS400 structural steel

Sin Jie Luo, Yen Hao Frank Su, Muh Jung Lu, Jui-Chao Kuo

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

In this study, the effect of magnesium addition on the inclusion formation in SS400 steel was investigated. The experimental specimens with and without Mg addition treatment were compared. The microstructure was observed using optical microscopy after etching with 3% nital. The morphology and chemical composition of the inclusions were analyzed via scanning electron microscopy and energy dispersive spectrometry. The lattice structure and orientation of the inclusions were identified by electron backscattering diffraction. The average size of inclusions in SS400 was between 0.67 and 0.75 μm, and between 0.65 and 0.68 μm in SS400 + Mg. The 2 ppm Mg addition resulted in the oxide formation change from Al2O3 to MgO·Al2O 3 and in the inclusion formation change from Al2O 3-MnS to MgO·Al2O3-MnS. Moreover, a simple-phase MnS with an average grain size of 1 μm to 2 μm was observed in rod-like, globular, and polyhedron forms.

Original languageEnglish
Pages (from-to)103-112
Number of pages10
JournalMaterials Characterization
Volume82
DOIs
Publication statusPublished - 2013 Jun 24

Fingerprint

Steel
Magnesium
magnesium
steels
inclusions
Backscattering
polyhedrons
Oxides
Spectrometry
Optical microscopy
Etching
backscattering
chemical composition
rods
Diffraction
grain size
etching
electron energy
microscopy
microstructure

All Science Journal Classification (ASJC) codes

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

Cite this

Luo, Sin Jie ; Su, Yen Hao Frank ; Lu, Muh Jung ; Kuo, Jui-Chao. / EBSD analysis of magnesium addition on inclusion formation in SS400 structural steel. In: Materials Characterization. 2013 ; Vol. 82. pp. 103-112.
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EBSD analysis of magnesium addition on inclusion formation in SS400 structural steel. / Luo, Sin Jie; Su, Yen Hao Frank; Lu, Muh Jung; Kuo, Jui-Chao.

In: Materials Characterization, Vol. 82, 24.06.2013, p. 103-112.

Research output: Contribution to journalArticle

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AU - Luo, Sin Jie

AU - Su, Yen Hao Frank

AU - Lu, Muh Jung

AU - Kuo, Jui-Chao

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N2 - In this study, the effect of magnesium addition on the inclusion formation in SS400 steel was investigated. The experimental specimens with and without Mg addition treatment were compared. The microstructure was observed using optical microscopy after etching with 3% nital. The morphology and chemical composition of the inclusions were analyzed via scanning electron microscopy and energy dispersive spectrometry. The lattice structure and orientation of the inclusions were identified by electron backscattering diffraction. The average size of inclusions in SS400 was between 0.67 and 0.75 μm, and between 0.65 and 0.68 μm in SS400 + Mg. The 2 ppm Mg addition resulted in the oxide formation change from Al2O3 to MgO·Al2O 3 and in the inclusion formation change from Al2O 3-MnS to MgO·Al2O3-MnS. Moreover, a simple-phase MnS with an average grain size of 1 μm to 2 μm was observed in rod-like, globular, and polyhedron forms.

AB - In this study, the effect of magnesium addition on the inclusion formation in SS400 steel was investigated. The experimental specimens with and without Mg addition treatment were compared. The microstructure was observed using optical microscopy after etching with 3% nital. The morphology and chemical composition of the inclusions were analyzed via scanning electron microscopy and energy dispersive spectrometry. The lattice structure and orientation of the inclusions were identified by electron backscattering diffraction. The average size of inclusions in SS400 was between 0.67 and 0.75 μm, and between 0.65 and 0.68 μm in SS400 + Mg. The 2 ppm Mg addition resulted in the oxide formation change from Al2O3 to MgO·Al2O 3 and in the inclusion formation change from Al2O 3-MnS to MgO·Al2O3-MnS. Moreover, a simple-phase MnS with an average grain size of 1 μm to 2 μm was observed in rod-like, globular, and polyhedron forms.

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