Untitled

Formation of the Microstructure in a Rapidly Solidified Cu-Co Alloy

“…[10] To determine the temperature and the concentration fields, the drop radius axis r was divided into a number of intervals (finite volume) with the mesh points located at the center of each interval, as shown in Figure 2. Equations [5] and [6] were, respectively, discretized as a set of implicit difference equations using the assumption that the temperature T and concentration C m , C e , and C b varied in a stepwise manner in the direction of the time axis and also in the direction of the drop radius axis (n mesh points).…”

“…[5] and [6] yielded, respectively, N ordinary differential equations with one equation for each of the N spatial mesh points. These equations were solved with the TDMA algorithm.…”

“…The temperature field inside the drop can be obtained by solving Eq. [5] using Eq. [4] as the boundary condition.…”

“…In Eq. [5], the first term and the second term describe the heat transfer due to the conduction and the motion of the precipitates, respectively. The third term describes the effect of the release of the latent heat due to the solidification.…”

“…Great attention has recently been paid to the study of the solidification of this alloy, [1][2][3][4][5][6][7][8][9] but, to date, little has been done regarding investigation of the kinetic details of the liquid-liquid decomposition under rapid solidification conditions. This article will propose a model to describe the microstructure development in the drops of Cu-Co alloy during cooling through the metastable miscibility gap.…”