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Modeling Morphological Evolution During Dendritic Solidification Using a Cellular Automation

Published

Author(s)

R E. Napolitano, T H. Sanders

Abstract

Morphological evolution of a dendritic growth front in a binary alloy is simulated using a cellular automation approach to establish the feasibility of modeling such growth with a local rule-based scheme. The motivation for this work is derived from the need to predict the development of solidification structures within real components of complex geometry, where significant constraint of the thermal and solutal fields may exist. Such cases present complex boundaries and large domain sizes, which may preclude the effective use of more conventional methods. In this work, a model is presented which couples a two-dimensional alternate-direction-implicit finite-difference diffusion solution with a cellular automaton growth algorithm to simulate morphological evolution in alloys solidifying under growth conditions. Temperature, composition, and interface configuration are formulated into a local growth potential which is incorporated into a cellular automaton. Alloy solidification is simulated over a range of experimental conditions, producing various structures. The effects of anisotropic configurational contributions are examined.
Conference Dates
July 12-16, 1998
Conference Location
Undefined
Conference Title
Pacific Rim International Conference On Advanced Materials and Processing

Keywords

cellular automation, dendritic growth, solidification modeling

Citation

Napolitano, R. and Sanders, T. (2008), Modeling Morphological Evolution During Dendritic Solidification Using a Cellular Automation, Pacific Rim International Conference On Advanced Materials and Processing, Undefined (Accessed April 20, 2024)
Created October 16, 2008