About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
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Advancing the Frontier of Powder Materials Processing and Sintering: A MPMD/EPD Symposium in Honor of Eugene Olevsky
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| Presentation Title |
Sintering forces at the particle scale behind the continuum theory of sintering |
| Author(s) |
Fumihiro Wakai |
| On-Site Speaker (Planned) |
Fumihiro Wakai |
| Abstract Scope |
Sintering can be modeled macroscopically as the high-temperature deformation of a homogeneous continuum, although microstructure evolution is complex and heterogeneous. The macroscopic strain rate is expressed as a linear response to the sintering stress and the macroscopic mechanical stress defined in a representative volume element. In principle, macroscopic densification behavior can be predicted from microstructure knowledge when assuming idealized simple models. The sintering stress results from the sintering force at the particle scale. The relative motion of particles is driven by this force, as analyzed in sintering through grain boundary diffusion. The theoretical framework of sintering force also applies to viscous sintering. However, defining the sintering force in processes like bulk diffusion, liquid phase sintering, and reactive sintering remains challenging. Here, we discuss the key problems that still exist at the forefront of sintering science. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Modeling and Simulation, Powder Materials, Process Technology |