Equiaxed dendritic solidification with convection. Part 2: Numerical simulations for an Al-4 wt pct Cu alloy
- Univ. of Hawaii, Honolulu, HI (United States). Dept. of Mechanical Engineering
- Univ of Iowa, Iowa City, IA (United States). Dept. of Mechanical Engineering
The multiphase model developed in part 1 for equiaxed dendritic solidification with melt convection and solid-phase transport is applied to numerically predict structural and compositional development in an Al-4 wt pct Cu alloy solidifying in a rectangular cavity. A numerical technique combining a fully implicit control-volume-based finite difference method with a multiple time-step scheme is developed for accurate and efficient simulations of both micro- and macroscale phenomena. Quantitative results for the dendritic microstructure evolution in the presence of melt convection and solid movement are obtained. The remarkable effects of the solid-liquid multiphase flow pattern on macrosegregation as well as the grain size distribution are illustrated.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 382526
- Journal Information:
- Metallurgical and Materials Transactions. A, Physical Metallurgy and Materials Science, Journal Name: Metallurgical and Materials Transactions. A, Physical Metallurgy and Materials Science Journal Issue: 9 Vol. 27; ISSN 1073-5623; ISSN MMTAEB
- Country of Publication:
- United States
- Language:
- English
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