A critical comparison between experimental results and numerical simulations of phase separation in the Fe-Cr system
作者： J.M. Hyde , A. Cerezo , M.K. Miller , G.D.W. Smith
DOI: 10.1016/0169-4332(94)90348-4
关键词: Phase (matter) 、 Monte Carlo method 、 Exponent 、 Spinodal decomposition 、 Ising model 、 Scale (ratio) 、 Cahn–Hilliard equation 、 Chemistry 、 Statistical physics 、 Thermodynamics 、 Atomic units
摘要: Abstract The atomic scale microstructures resulting from the thermal ageing of a series Fe-Cr specimens have been analysed using position sensitive atom probe microanalysis. 3D quantitatively compared with both discrete dynamic Ising model and numerical solution to non-linear Cahn-Hilliard-Cook equation. time exponent for coarsening was found closely match experimental results, whereas produced higher exponent. Moreover, reproduce better fine graininess in microstructures. It is evident that this can accurately predict evolution an important phase transformation results may be applied analyse behaviour some very engineering materials.
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