Simulation of the solidification of pure nickel via the phase-field method

AUTOR(ES)

Ferreira, Alexandre Furtado, Silva, Alexandre José da, Castro, José Adilson de

FONTE

Materials Research

DATA DE PUBLICAÇÃO

2006-12

RESUMO

The Phase-Field method was applied to simulate the solidification of pure nickel dendrites and the results compared with those predicted by the solidification theory and with experimental data reported in the literature. The model's behavior was tested with respect to some initial and boundary conditions. For an initial condition without supercooling, the smooth interface of the solid phase nucleated at the edges of the domain grew uniformly into the liquid region, without branching. In an initially supercooled melt, the interface became unstable under 260 K supercooling, generating ramifications into the liquid region. The phase-field results for dendrite tip velocity were close to experimental results reported in the literature for supercooling above 50 K, but they failed to describe correctly the nonlinear behavior predicted by the collision-limited growth theory and confirmed by experimental data for low supercooling levels.

Documentos Relacionados

• Numerical simulation of the solidification of pure melt by a phase-field model using an adaptive computation domain
• Phase-Field Simulation for Non-isothermal Solidification of Al-Cu Binary Alloy
• Simulation of the Microstructural Evolution of Pure Material and Alloys in an Undercooled Melts via Phase-field Method and Adaptive Computational Domain
• Phase-Field Simulation of Microsegregation and Dendritic Growth During Solidification of Hypoeutectic Al-Cu alloys
• Numerical simulation of solute trapping phenomena using phase-field solidification model for dilute binary alloys