| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Processing Effects on Microstructure and Material Performance
|
| Presentation Title |
Integrated Simulation Framework for Additively Manufactured Metallic Alloys |
| Author(s) |
Rongpei Shi, Saad Khairallah, Tae Wook Heo, Tien T. Roehling, John D. Roehling, Joseph T. Mckeown, Manyalibo J. Matthews |
| On-Site Speaker (Planned) |
Rongpei Shi |
| Abstract Scope |
To accelerate the establishment of fundamental understanding of the additive manufacturing (AM) process and its influence on microstructural evolution and related properties of metallic alloys, we develop a multiphysics and multiscale modeling framework that integrates: (1) a high-fidelity powder-scale three dimensional simulation of transient heat transfer and melt flow dynamics, (2) cellular automaton simulation of solidification grain structure and texture, (3) phase-field modeling of precipitation and dissolution of second-phase precipitate during repeated thermal cycles, and (4) microstructure based mesoscopic elastic response calculation. We demonstrate the application of the integrated framework in: (1) laser beam shaping for solidification grain structure (i.e., columnar vs equiaxed grains) control during laser powder bed fusion (LPBF) AM of 316L-stainless steel; and (2) in situ selective large-area diode surface heating for both solidification grain structure and solid-state second-phase precipitate microstructure control during LPBF AM of Ti-6Al-4V. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |