About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advancing the Frontier of Powder Materials Processing and Sintering: A MPMD/EPD Symposium in Honor of Eugene Olevsky
|
| Presentation Title |
Characterization of sintering stress and mechanisms using in situ TEM |
| Author(s) |
Shen J. Dillon |
| On-Site Speaker (Planned) |
Shen J. Dillon |
| Abstract Scope |
The evolution of sintering stress and its impact on sintering kinetics and the dimensional stability of powder compacts has been a question of central importance for powder consolidation. The sintering stress can be measured directly at single particle contacts at the zero creep condition during high temperature small scale loading. It can also be calculated geometrically with the appropriate values of interfacial energies. In situ observations indicate that the sintering stress does not simply monotonically decay at individual interfaces. In situ bicrystal creep measurements indicate that sink nucleation kinetics require large local stresses. These reactions strongly influence the evolution of sintering stress and the overall sintering kinetics. The talk will discuss alternative sintering models that account for nucleation kinetics and their predictions regarding sintering phenomena like heating rate effects. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Ceramics, Other, Powder Materials |