| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Ultrafine-grained and Heterostructured Materials (UFGH XI)
|
| Presentation Title |
Heterogeneous Pore Architecture Achieved by Spark Plasma Sintering |
| Author(s) |
Alexander Preston, Yuchen Lin, Kaka Ma |
| On-Site Speaker (Planned) |
Kaka Ma |
| Abstract Scope |
Spark plasma sintering (SPS) is known for its capability of preserving ultrafine-grained (UFG) structure because of its rapid densification rate. While many studies on UFG materials aimed to minimize porosity to achieve a high relative density, forming porous structure became one trend of the powder metallurgy as pores reduce the weight of the materials and increase the surface area. In this presentation, recent efforts on the fabrication of porous materials via SPS are discussed, including literature review and our own research results on stainless steels and Ti. It is found partial densification and thermal gradients in SPS provide an opportunity to engineer a heterogeneous meso- and micro- pore architecture in the sintered materials. Reducing the pore size to the submicron regime improve strength and deformability. The discussion is emphasized on the effect of thermal gradients in SPS on the formation of inter-particle contacts and the consequent pore structure. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume; Planned: Supplemental Proceedings volume |