current Interest In Research Of Solidification Of Melts Is Focused To Understand Crystal Nucleation And Crystal Growth. They Determine The Solidified Product With Its Physical Properties. A Detailed Description Of These Processes Lead To The Development And Validation Of Physical Models, Which May F
Quantitative phase-field modeling for two-phase solidification process involving diffusion in the solid
โ Scribed by Munekazu Ohno; Kiyotaka Matsuura
- Publisher
- Elsevier Science
- Year
- 2010
- Tongue
- English
- Weight
- 816 KB
- Volume
- 58
- Category
- Article
- ISSN
- 1359-6454
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โฆ Synopsis
A quantitative phase-field model for two-phase solidification processes is developed based on the anti-trapping current approach with the free energy functional formulated to suppress the formation of an extra phase at the interface. This model appropriately recovers the free boundary problem for the motion of interface in the thin-interface limit and, importantly, it is applicable to the solidification process in binary alloy systems with arbitrary values of the solid diffusivities and interfacial energies. The performance of the present model is investigated for the peritectic reaction process in carbon steel. The present model exhibits excellent convergence behavior with respect to the interface thickness.
๐ SIMILAR VOLUMES
current Interest In Research Of Solidification Of Melts Is Focused To Understand Crystal Nucleation And Crystal Growth. They Determine The Solidified Product With Its Physical Properties. A Detailed Description Of These Processes Lead To The Development And Validation Of Physical Models, Which May F
Using state-of-the-art numerical techniques, such as mesh adaptivity, implicit time-stepping and a non-linear multi-grid solver, the phase-field equations for the non-isothermal solidification of a dilute binary alloy have been solved. Using the quantitative, thin-interface formulation of the proble
We investigate the well-posedness of a phase-"eld model for the isothermal solidi"cation of a binary alloy due to Warren}Boettinger [12]. Existence of weak solution as well as regularity and uniqueness results are established under Lipschitz and boundedness assumptions for the non-linearities. A max