Prediction of Solid-Liquid Interface Stability and Dendritic Growth in Multi-Component Alloys with Calphad Method

2005 ◽  
Vol 475-479 ◽  
pp. 2721-2724
Author(s):  
Rui Jie Zhang ◽  
Zhi He ◽  
Wan Qi Jie
Keyword(s):  
Experimental Data ◽  
Present Method ◽  
Dendritic Growth ◽  
Calphad Method ◽  
Liquid Interface ◽  
Interface Stability ◽  
Calculation Results ◽  
Solid Liquid Interface ◽  
Solid Liquid ◽  
Good Agreement

A method to predict the solid-liquid interface stability and the constrained dendrite growth of multi-component alloys was developed based on the Calphad method. The method was applied to several industrial Al-Si-Mg alloys, and the predicted results were compared with some former experimental data. The good agreement between the calculation results and the experimental data demonstrates the superiority of the present method to the classical one based on constant parameter assumptions.

Phase-Field Microstructure Solidification of Al–2 wt% Si Alloys

2019 ◽  
Vol 142 (1) ◽  
Author(s):  
J. B. Allen
Keyword(s):  
Directional Solidification ◽  
Phase Field ◽  
Maximum Concentration ◽  
Dendritic Growth ◽  
Interface Energy ◽  
Liquid Interface ◽  
Two Dimensional ◽  
Solid Liquid Interface ◽  
Solid Liquid ◽  
Dilute Alloy

In this work, we develop one- and two-dimensional phase-field simulations to approximate dendritic growth of a binary Al–2 wt% Si alloy. Simulations are performed for both isothermal as well as directional solidification. Anisotropic interface energies are included with fourfold symmetries, and the dilute alloy assumption is imposed. The isothermal results confirm the decrease in the maximum concentration for larger interface velocities as well as reveal the presence of parabolic, dendrite tips evolving along directions of maximum interface energy. The directional solidification results further confirm the formation of distinctive secondary dendritic arm structures that evolve at regular intervals along the unstable solid/liquid interface.

Analysis for free dendritic growth model incorporating the nonisothermal nature of solid–liquid interface

2015 ◽  
Vol 379 (4) ◽  
pp. 237-240 ◽  
Author(s):  
Shu Li ◽  
Zhihui Gu ◽  
Dayong Li ◽  
Shucheng Liu ◽  
Minghua Chen ◽  
...  
Keyword(s):  
Growth Model ◽  
Dendritic Growth ◽  
Liquid Interface ◽  
Solid Liquid Interface ◽  
Solid Liquid

Solid/liquid interface stability in normal and microgravity conditions

1982 ◽  
Vol 9 (4) ◽  
pp. 255-259 ◽  
Author(s):  
J.J. Favier ◽  
J. Berthier ◽  
Ph. Arragon ◽  
Y. Malméjac ◽  
V.T. Khryapov ◽  
...  
Keyword(s):  
Liquid Interface ◽  
Interface Stability ◽  
Microgravity Conditions ◽  
Solid Liquid Interface ◽  
Solid Liquid

Continuum Models With Slip for the Evaporating Meniscus and Comparison With Experimental Results

2008 ◽  
Author(s):  
Arya Chatterjee ◽  
Joel L. Plawsky ◽  
Peter C. Wayner
Keyword(s):  
Experimental Data ◽  
Heat Flux ◽  
Heat Pipe ◽  
Dip Coating ◽  
Liquid Interface ◽  
Continuum Models ◽  
Experimental Investigations ◽  
Vapor Interface ◽  
Solid Liquid Interface ◽  
Solid Liquid

The evaporating meniscus is a recurring phenomenon in engineering that has relevance in diverse applications like dip-coating, pool boiling and the micro heat pipe. It is known that the evaporative heat flux at the liquid vapor interface peaks at the interline region. Recent experimental investigations have indicated a rise in the curvature in this region. To match the increased flow predicted by this curvature jump, slip may be required at the solid liquid interface. We use continuum models and experimental data on temperature and thickness to evaluate slip at the liquid solid interface.

Comparison of Sharp Interface Dendritic Growth Simulation With Microscopic Solvability Theory

2001 ◽  
Author(s):  
H. S. Udaykumar ◽  
R. Mittal ◽  
L. Mao
Keyword(s):  
Dendritic Growth ◽  
Numerical Technique ◽  
Solidification Process ◽  
Sharp Interface ◽  
Property Variation ◽  
Lagrangian Framework ◽  
Solid Liquid Interface ◽  
Solvability Theory ◽  
Solid Liquid ◽  
Good Agreement

Abstract We present and validate a numerical technique for computing dendritic growth of crystals from pure melts. The solidification process is computed in the diffusion-driven limit. The mixed Eulerian-Lagrangian framework treats the immersed phase boundary as a sharp solid-fluid interface and a conservative finite volume formulation allows boundary conditions at the moving surface to be exactly applied. The case of discontinuous material properties is also computed. The results from our calculations are compared with two-dimensional microscopic solvability theory. It is shown that the method predicts dendrite tip details in good agreement with solvability theory. The ability of the method to treat the front as a sharp entity and therefore to respect discontinuous material property variation at the solid-liquid interface is also shown to produce results in agreement with solvability and with other sharp interface simulations.

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