Conference proceeding
MODELING AND IN-SITU X-RAY VIDEO MICROSCOPY OF CONFINED EQUIAXED GRAIN GROWTH AND BUOYANT MOTION IN AL-CU
MODELING OF CASTING, WELDING, AND ADVANCED SOLIDIFICATION PROCESSES - XII, p.643
2009
Abstract
Equiaxed dendritic growth in grain refined Al-x wt% Cu (x=15-25) has been studied in-situ during directional solidification by means of synchrotron X-ray video microscopy. At these compositions, the alpha-Al grains have a lower density than the surrounding melt and experience buoyant forces which affect their growth rates and morphologies. As the samples are concealed within a thin container, the walls severely influence grain motion. A model for one single grain has been derived taking into account the influence of sample confinement on the drag force exerted on the free grain. The model is compared with the in-situ experiments to evaluate its present merits and to devise possible routes for further improvement in order to develop it to describe alpha-Al dendritic growth during buoyant motion.
Details
- Title: Subtitle
- MODELING AND IN-SITU X-RAY VIDEO MICROSCOPY OF CONFINED EQUIAXED GRAIN GROWTH AND BUOYANT MOTION IN AL-CU
- Creators
- P DelaleauR H MathiesenP L SchafferL ArnbergC Beckermann
- Contributors
- D M Maijer (Editor)
- Resource Type
- Conference proceeding
- Publication Details
- MODELING OF CASTING, WELDING, AND ADVANCED SOLIDIFICATION PROCESSES - XII, p.643
- Language
- English
- Date published
- 2009
- Academic Unit
- Mechanical Engineering
- Record Identifier
- 9984231826902771
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