| Issue |
Rev. Met. Paris
Volume 100, Number 12, December 2003
Science et Génie des MatériauxContraintes résiduelles |
|
|---|---|---|
| Page(s) | 1193 - 1202 | |
| DOI | https://doi.org/10.1051/metal:2003188 | |
| Published online | 20 January 2004 | |
Physical models of microporosity formation during MMC fabrication
The impregnation of a fibrous preform by a liquid metal is one of the techniques used to prepare metal matrix composites (MMC). The preparation by impregnation may however lead to defects like microporosity. The micropores present in MMC result from the superposition of two processes: the trapping of gas by capillarity during the infiltration phase and the formation of additional porosity related to solidification shrinkage. These two processes are analyzed in this paper and physical models are proposed for their description. It is then shown how the formation of microporosities can be simulated numerically using these models. Finally, prospects for a better numerical simulation of the preparation of MMC by impregnation are discussed.
© La Revue de Métallurgie, 2003
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.