Detailed phase diagram mapping: T–X data for solidi and liquidi of the alloy system manganese–carbon
-
Jo Fenstad
and Johan Kr. Tuset
Abstract
The liquidus lines of the binary system Mn – C were studied, mainly by solubility determinations (at high carbon) and thermal analysis (at low carbon). The low carbon part of the liquidus was mapped in unprecedented detail. The poorly defined phase Mn4C1 – X is probably the highest melting manganese carbide (i. e. not Mn7C3). No (stable) peritectics exist below 1326 °C, but three eutectics were identified: one meta-stable and two stable. Also, transistion temperatures were identified for some Mn carbides, as well as γ-Mn (austenitic manganese), and δ-Mn (ferritic). Literature data were co-opted to quantify the enthalpy of melting for δ-Mn (8.3 ± 1.5 kJ · mol−1) which is 3 to 5 kJ lower than given by current tabulations and databases. Several transition temperatures within Mn – C (including the melting of pure δ-Mn) are markedly affected by even minor amounts of oxygen and nitrogen.
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© 2007, Carl Hanser Verlag, München
Articles in the same Issue
- Contents
- Contents
- Basic
- Modeling short-range ordering in solutions
- 3D-representation of phase and property diagrams in multi-component systems
- Constrained Gibbs energy minimisation
- The thermochemistry library ChemApp and its applications
- SimuSage – the component library for rapid process modeling and its applications
- An assessment of the ordered phases in Mn–Ni using two- and four-sublattice models
- Thermodynamic assessment of the Al–Li system
- Detailed phase diagram mapping: T–X data for solidi and liquidi of the alloy system manganese–carbon
- Applied
- Thermodynamic aspects of liquid phase sintering of SiC using Al2O3 and Y2O3
- Thermodynamic modeling of the B2O3–SiO2 and B2O3–Al2O3 systems
- Applications of thermodynamic modeling in copper converting operations
- Thermodynamic treatment of uranium dioxide based nuclear fuel
- Thermodynamic modeling of the stability and melting properties of sodium borates relevant to black liquor combustion and gasification
- Thixoforming of non-dendritic AA6061 feedstock produced by low superheat casting with and without a cooling slope
- Comparative thermodynamic study and phase equilibria of the Bi–Ga–Sn ternary system
- Grain growth in materials with mobile second-phase particles
- Notifications
- DGM News
Articles in the same Issue
- Contents
- Contents
- Basic
- Modeling short-range ordering in solutions
- 3D-representation of phase and property diagrams in multi-component systems
- Constrained Gibbs energy minimisation
- The thermochemistry library ChemApp and its applications
- SimuSage – the component library for rapid process modeling and its applications
- An assessment of the ordered phases in Mn–Ni using two- and four-sublattice models
- Thermodynamic assessment of the Al–Li system
- Detailed phase diagram mapping: T–X data for solidi and liquidi of the alloy system manganese–carbon
- Applied
- Thermodynamic aspects of liquid phase sintering of SiC using Al2O3 and Y2O3
- Thermodynamic modeling of the B2O3–SiO2 and B2O3–Al2O3 systems
- Applications of thermodynamic modeling in copper converting operations
- Thermodynamic treatment of uranium dioxide based nuclear fuel
- Thermodynamic modeling of the stability and melting properties of sodium borates relevant to black liquor combustion and gasification
- Thixoforming of non-dendritic AA6061 feedstock produced by low superheat casting with and without a cooling slope
- Comparative thermodynamic study and phase equilibria of the Bi–Ga–Sn ternary system
- Grain growth in materials with mobile second-phase particles
- Notifications
- DGM News