Conference proceeding
Simulation of cast metal-matrix particulate composite solidification with convection
PROCESSING, PROPERTIES, AND APPLICATIONS OF CAST METAL MATRIX COMPOSITES, pp.1-19
1996
Abstract
A multiphase model is developed for the alloy solidification of cast metal-matrix particulate composites and applied to various Al-Si/SiC systems. Macroscopic transport equations are written for each phase with unknown parameters modeled through supplementary relations pertinent to the solidification of a metal-matrix containing a stationary solid phase and generally non-stationary spherical particles. Model validation is performed through comparison of one-dimensional simulation results to experimental sedimentation and composite solidification results in which good agreement is found. Case studies include one-dimensional macroscopic rejection on the scale of the casting and two-dimensional solidification in unreinforced and reinforced systems. The two-dimensional results indicate a nearly uniform particle distribution results for relatively small particles whereas large denuded and packed zones form for relatively large particles. Convection and macrosegregation during solidification are substantially reduced in the presence of particles due to the relatively large interfacial drag exerted on the liquid by the stationary dispersed phases.
Details
- Title: Subtitle
- Simulation of cast metal-matrix particulate composite solidification with convection
- Creators
- R J FellerC Beckermann
- Contributors
- P K Rohatgi (Editor)
- Resource Type
- Conference proceeding
- Publication Details
- PROCESSING, PROPERTIES, AND APPLICATIONS OF CAST METAL MATRIX COMPOSITES, pp.1-19
- Language
- English
- Date published
- 1996
- Academic Unit
- Mechanical Engineering
- Record Identifier
- 9984231944402771
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