Author： Velasco Eulogio Valtierra Salvador Mojica Juan Talamantes Jesus Cano Sigifredo Colas Rafael
Publisher： Springer Publishing Company
ISSN： 1543-1916
Source： Metallurgical and Materials Transactions B, Vol.30, Iss.4, 1999-08, pp. : 773-778
Disclaimer: Any content in publications that violate the sovereignty, the constitution or regulations of the PRC is not accepted or approved by CNPIEC.
Abstract
Unidirectional solidification tests on an aluminum alloy were conducted with a computer-controlled instrumented rig. The alloys employed in this study were poured into isolated ingot molds (made of recrystallized alumina and covered with ceramic fiber) placed on top of a steel plate, coated either with a graphite- or ceramic-based paint in order to avoid sticking of the material. Thermal evolution during the test was captured by type-K thermocouples placed at different positions in both the ingot and the plate. The bottom surface of the plate was either cooled with water or left to cool in air. The heat-transfer coefficients across the aluminum-steel interface were evaluated by means of a finite-difference model. It was concluded that the heat-transfer rate depends on the conditions at the interface, such as the type of coating used to protect the plate, and the solidification reactions occurring on the aluminum during its solidification.
Related content
Access to resources
Recommend
By Wells M. Li D. Cockcroft S.
Metallurgical and Materials Transactions B, Vol. 32, Iss. 5, 2001-10 ,pp. :