From: Phase field assisted analysis of a solidification based metal refinement process
(a) Nominal alloy composition C0 and segregation coefficients k of the impurity elements. | |||
Element | Mn | Fe | Si |
CO [%wt] | 1.14e-2 | 4.8e-3 | 4.6e-3 |
k | 0.64 | 0.022 | 0.1 |
(b) Diffusion coefficient in liquid for the impurity elements in terms of Arrhenius law \(D_{liq}=D_{0}\exp \left (\frac {-E}{RT}\right)\) | |||
(Sun et al. 2013). Diffusion length l D = D/V with V = 2 μms−1 and T = 932.5 K | |||
Element | Fe | Mn | Si |
D0 [cm2s −1] | 2.34e-3 | 1.93e-3 | 1.34e-3 |
E [Jmol −1] | 4e4 | 3.1e4 | 3e4 |
lD [cm] | 0.067 | 0.177 | 0.1395 |