A Model for Lamellar-Rod Eutectic Transition
Critical experiments in Al-Cu hypo-eutectic alloys have been carried out in capillary samples in order to establish the lamellar/rod eutectic transition condition. It is shown that this transition occurs over a range of compositions. Physics of the diffuse nature of this transition is proposed and the dynamics of the transition is shown to give a specific geometric relationship between the lamellar and rod spacing at the transition. A model of lamellar/rod eutectic transition is established that incorporates the dynamic nature of this transition and the anisotropy in interfacial energies.
Young Won Chang, Nack J. Kim and Chong Soo Lee
S. Liu et al., "A Model for Lamellar-Rod Eutectic Transition", Materials Science Forum, Vols. 561-565, pp. 1003-1006, 2007