Observations of the Columnar to Equiaxed Transition in Directionally Solidified Zinc-Aluminum Alloys and Composites

A. E. ARES ; CARLOS ENRIQUE SCHVEZOV

World Journal of Engineering (WJOE)

University of New Orleans

Lugar: New Orleans; Año: 2010 vol. 7 p. 37 - 38

1708-5284

The results presented in this paper focus on the CET studies in Zn-Al alloy systems with different compositions and with reinforcing particles of silicon carbide and alumina. The effects of several solidification parameters on the transition are determined and discussed. Such parameters include the position of the solidification fronts given by the liquidus and solidus temperatures, cooling rate of the liquid, temperature gradient, superheat, heat flow and recalescence. After solidification the structure was analyzed. The analyses were done performing quantitative metallography and composition analysis of the different alloying elements along solidified samples utilizing SEM (Scanning Electron Microscopy) and EDXA (Energy Dispersive X-Ray Microanalysis).