| 1. |
- Höglund, Lars, et al.
(författare)
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Simulation of Carbon Diffusion in Steel Driven by a Temperature Gradient
- 2010
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Ingår i: Journal of Phase Equilibria and Diffusion. - : Springer Science and Business Media LLC. - 1547-7037 .- 1863-7345. ; 31:3, s. 212-215
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Tidskriftsartikel (refereegranskat)abstract
- The basis of thermomigration in multicomponent alloys is summarized, and the general equations are given and implemented in the DICTRA software. Experimental information from Okafor et al. is analyzed with the new simulations and it is concluded that steady- state conditions was not established during their experiment. A heat of transport Q(C)* = -44000 J/mol, almost four times larger than the value given by Okafor et al., was found to give a satisfactory representation of the experimental information.
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| 2. |
- Kjellqvist, Lina, 1979-, et al.
(författare)
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Thermodynamic assessment of the Fe-Mn-O system
- 2010
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Ingår i: Journal of Phase Equilibria and Diffusion. - : Springer US. - 1547-7037 .- 1863-7345. ; 31:2, s. 113-134
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Tidskriftsartikel (refereegranskat)abstract
- The C-Cr-Fe-Ni-O system has recently been studied with the intention to thermodynamically describe the influence of oxygen on high alloyed steels. In this study the ternary Fe-Mn-O system is assessed and part of the binary Mn-O system is reassessed. α- and β-hausmannite (Mn3O4) were earlier described as stoichiometric phases, but are here described using the compound energy formalism with a four sublattice model to be consistent with the preceding study of the Cr-Fe-Ni-O spinel. The liquid phase is assessed using the ionic two-sublattice model. Good agreement between calculated and experimental values is achieved.
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| 3. |
- Lindwall, Greta, et al.
(författare)
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Assessment and evaluation of mobilities for diffusion in the bcc Cr-Mo-Fe system
- 2012
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Ingår i: Journal of Phase Equilibria and Diffusion. - : ASM International. - 1547-7037 .- 1863-7345. ; 33:5, s. 375-389
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Tidskriftsartikel (refereegranskat)abstract
- An assessment of the diffusion mobility functions for diffusion in the bcc Cr-Fe-Mo system ispresented. The optimization of the mobility parameters is performed by utilizing experimentaldiffusion data available in literature. New diffusion data for the Mo diffusion is produced by adiffusion couple experiment and is accounted for in the optimization. Agreement between calculatedand measured diffusion coefficients is found. An M6C coarsening experiment is performedand the measured coarsening rate can be reproduced by diffusion calculation using the DICTRA software and the developed kinetic description. The mobility parameters are shown tohave a strong influence on the calculated coarsening rate.
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