|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Applications of Solidification Fundamentals
||Thermal Analysis of Cu-Cu2O Eutectic
||Cécile FOSSE, Manuel Castro-Román, Jacques Lacaze, Luc Robbiola
|On-Site Speaker (Planned)
Archeological artifacts and remains (up to several thousands of years) obtained from cast copper have been discovered in various sites all around the world. The microstructure of these artifacts mainly consists in a fibrous Cu-Cu2O eutectic surrounding dendrites of a primary phase that can be either copper or Cu2O. This eutectic has been rarely studied, and one has to go back to Eastwood (1934) for a detailed description of the eutectic morphology. This author showed that the eutectic grains consist in densely packed fibers in the center, which bend and coarsen at the periphery. In an attempt to reproduce this microstructure in laboratory, investigation of the eutectic structure was performed and it was found for hypereutectic composition that Cu2O dendrites are surrounded by a thick halo of copper. This appears to correspond to a significant undercooling for the formation of the copper-rich phase which is here investigated by thermal analysis.
||Planned: Supplemental Proceedings volume