Abstract
A model for viscosity, sintering stress, densification rate, Poison's rate has been developed for sintering of functionally gradated hard metals. In order to optimise sintering process of WC-Co hard metals, first all parameters of sintering kinetics like viscosity for those hard metal materials have been determined experimentally with a 2-D optical dilatometer to develop sintering modelling. The parameters has been applied directly for a finite element simulation of FGM hard metal plate for sintering process. As a example, a sintering simulation of WC-Co graded plate have been done to explore variation of process parameters for optimisation of sintering. It was shown that optimal green density distribution together with cobalt and grain size gradients retain. flat shape of the plate, and this combination also decreases thermal stresses.
| Original language | English |
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| Title of host publication | EURO PM 2002: HARD MATERIALS PROCEEDINGS |
| Publisher | European Powder Metallurgy Association (EPMA) |
| Pages | 297-302 |
| Number of pages | 6 |
| ISBN (Print) | 1-899072-17-9 |
| Publication status | Published - 2002 |
| MoE publication type | A4 Conference publication |
| Event | European Conference on Hard Materials and Diamond Tooling - Lausanne, Switzerland Duration: 7 Oct 2002 → 9 Oct 2002 |
Conference
| Conference | European Conference on Hard Materials and Diamond Tooling |
|---|---|
| Country/Territory | Switzerland |
| City | Lausanne |
| Period | 07/10/2002 → 09/10/2002 |
Keywords
- POWDER