Modelling of Diffusive and Massive Phase Transformation
作者： Jiří Vala
DOI: 10.1007/978-1-4020-6975-8_5
关键词:
摘要: Diffusion in multi-component alloys can be characterized (a) by the vacancy mechanism for substitutional components, (b) existence of sources and sinks vacancies, (c) motion atoms interstitial components. The description diffusive massive phase transformation a system is based on principle maximum dissipation rate Onsager; finite thickness interface between both phases respected. A new computational model (its one-dimensional, general non-stationary version presented here) covers open to involve natural way. mathematical analysis results an initial-value problem partial differential equations evolution with certain non-local integral term; unknowns are mole fractions particular components (and some additional variables case (b)). numerical construction approximate solutions comes from method lines difference other techniques, namely integration formulae spectral linear operators. original software code supported MATLAB partially MAPLE.
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