Seçer, Ragıp Orkun and Nedjad, Syamak Hossein and Yıldız, Mehmet (2024) Extending a phase field model of polycrystalline solidification for simulating grain evolution in metal additive manufacturing. Computational Materials Science, 240 . ISSN 0927-0256 (Print) 1879-0801 (Online)
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Official URL: https://dx.doi.org/10.1016/j.commatsci.2024.112997
Abstract
The Warren-Kobayashi-Lobkovsky-Carter (WKLC) coupled phase and orientation field model, originally developed for polycrystalline materials solidification, is extended for the simulation of grain evolution in metal additive manufacturing. Firstly, a moving heat source is incorporated to the model for generating a transient melt pool. Additionally, the relaxation time of the orientation field evolution is drastically increased below melting point through a temperature-dependent exponential term, which prevents grain coarsening after solidification. These adjustments allow qualitative simulation of columnar grains across various melting conditions.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | Additive manufacturing; Grain structure; Orientation; Phase field; Simulation |
| Divisions: | Faculty of Engineering and Natural Sciences Integrated Manufacturing Technologies Research and Application Center |
| Depositing User: | Syamak Hossein Nedjad |
| Date Deposited: | 10 Jun 2024 12:22 |
| Last Modified: | 10 Jun 2024 12:22 |
| URI: | https://research.sabanciuniv.edu/id/eprint/49304 |
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