| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
2024 Technical Division Student Poster Contest
|
| Presentation Title |
SPG-55: Voronoi Tessellation Validation for Analysis of Microstructural Data from Sintered Porous Metal Structures |
| Author(s) |
Pierangeli Rodriguez De Vecchis, Markus Chmielus |
| On-Site Speaker (Planned) |
Pierangeli Rodriguez De Vecchis |
| Abstract Scope |
Modelling of microstructures for simulation work of polycrystalline metals often starts by generating a randomized Voronoi tessellation to represent grains. Grain size is commonly fitted to a normal distribution or informed from Electron-Back-Scattered-Diffraction. This study aims to compare the calculated grain size obtained through Voronoi Tessellation seeded at pore centers of sintered microstructures with values obtained through stereological measurements of the etched cross-sections. Various microstructures were obtained by sintering at different temperatures and times to compare the effect of connected porosity, pore shrinkage and pore coarsening on the Voronoi cell approximation. Results suggest that at all temperatures the Voronoi cell diameter follows the same trend as the grain size, but the magnitude is in-between that of grain size and pore separation. These results are compatible with the definition of pore separation as the mean free path distance between pores that is larger than the Voronoi cell diameter (nearest neighbor distance). |
| Proceedings Inclusion? |
Undecided |
| Keywords |
Characterization, Powder Materials, |