Rev. Met. Paris
Volume 100, Number 2, February 2003Science et Génie des Matériaux
Journée Jean Morlet : J.A. SF2M 2001
|Page(s)||157 - 164|
|Published online||27 March 2003|
Influence of grain refinement on hot tearing in aluminium-copper alloys used in foundry industries
The hot tearing of aluminium-copper alloys is a serious defect for the foundrymen. The grain refinement of these alloys allows to decrease their hot tearing susceptibility. The aim of this work is to better understand the hot tearing mechanism and the grain refinement action. So, hot tearing tests and tensile tests in the mushy state have been performed. Moreover, a hot tearing model, based on the nucleation and growth of a cavity in a liquid film and taking into account the mushy zone rheology, has been developed.
© La Revue de Métallurgie, 2003
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