| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Powder Materials Processing and Fundamental Understanding
|
| Presentation Title |
Effect of Powder Morphology on Densification and Microstructural Gradients of Titanium in Spark Plasma Sintering |
| Author(s) |
Alexander Preston , Kaka Ma |
| On-Site Speaker (Planned) |
Kaka Ma |
| Abstract Scope |
This study addresses the key role that powder morphology plays in the densification behavior and microstructural gradients that occur in spark plasma sintering. First, a strategy to incorporate mater sintering curves (MSC) into a thermal-electric (TE) finite element modeling (FEM) will be discussed to achieve continuous nodal-specific simulation of the evolution of thermal and electrical properties of the powder compact with respect to both relative density and temperature during sintering. Lab-scale Ti samples (diameter ~ 20 mm) were fabricated for construction and validation of MSC, whereas scaled-up Ti samples (diameter 65~70 mm) were made and characterized to verify the accuracy of the MSC - TE FEM combined model. The verified MSC - TE FEM combined model is then applied to investigate the effect of powder morphology. Key findings reveal that powders having a larger activation energy of sintering exhibit a greater gradient in microstructure. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Powder Materials, Titanium, Characterization |