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Three-dimensional stability diagram of Al–Mg–O inclusions in molten steel
- Source :
- Journal of Materials Research and Technology, Vol 12, Iss, Pp 43-52 (2021)
- Publication Year :
- 2021
- Publisher :
- Elsevier BV, 2021.
-
Abstract
- Stability diagrams are of great importance for investigating deoxidation equilibrium and controlling inclusions in molten steel. Combined with programming for calculation and drawing, the three-dimensional stability diagrams of MgO, MgO·Al2O3, and Al2O3 in the Fe–Al–Mg–O system were successfully drawn, which can visually explain the meaning of the iso-oxygen contours and the borderlines among different phases. They also offer straight evidence that the borderline method is imperfect. The three-dimensional stability diagrams can visually show more vital details that cannot be illustrated by the iso-oxygen contours. The most significant advantage of three-dimensional stability diagrams is not only judging the most stable phase in the specific component area but also visually showing the transformation trend among the phases from a three-dimensional perspective, especially when the equilibrium surfaces of these phases are relatively close. Besides, an interesting transformation of inclusions in the Fe–Al–Mg–O system was found. When the magnesium content is higher than 0.0065% and the aluminum content is lower than 0.21%, the equilibrium products of aluminum-magnesium composite deoxidation may be transformed from MgO to MgO·Al2O3 and Al2O3 in turn, which can be directly observed from the three-dimensional stability diagram based on the calculations.
- Subjects :
- Materials science
Composite number
chemistry.chemical_element
Thermodynamics
Deoxidation equilibrium
02 engineering and technology
01 natural sciences
Biomaterials
Aluminium
0103 physical sciences
Stability diagram
Stable phase
Inclusion
Fe–Al–Mg–O system
010302 applied physics
Mining engineering. Metallurgy
Component (thermodynamics)
TN1-997
Metals and Alloys
021001 nanoscience & nanotechnology
Surfaces, Coatings and Films
Transformation (function)
chemistry
Ceramics and Composites
Molten steel
Three-dimensional
0210 nano-technology
Subjects
Details
- ISSN :
- 22387854
- Volume :
- 12
- Database :
- OpenAIRE
- Journal :
- Journal of Materials Research and Technology
- Accession number :
- edsair.doi.dedup.....b1e1bde51c5e2a02f13f834369e07b6b