Control of the Single Crystal Reinforcement by the Intermetallic Compound Layers
. An improvement of the Brody & Flemings theory has been proposed to study not only the solute segregation but the solute redistribution during the single crystal growth as well. The redistribution is treated as a phenomenon superposed upon the segregation phenomenon. The crystal growth has been performed by the closed Bridgman system with a constant growth rate and an imposed temperature gradient. A hypo-eutectic Zn-Ti alloy has been subjected to oriented growth and precipitation of the Zn-16Ti intermetallic compound was observed. The precipitates have been placed as some layers distributed within the single crystal with a constant spacing. Some data from the Zn-Ti binary phase diagram was introduced into the theory to show possibility of the control the phenomenon of the reinforcement by precipitation during a single crystal growth.
A. Roósz, V. Mertinger, P. Barkóczy and Cs. Hoó
W. Wołczyński et al., "Control of the Single Crystal Reinforcement by the Intermetallic Compound Layers", Materials Science Forum, Vol. 649, pp. 125-130, 2010