About modelling and metallurgy

Abstract

From his own experience, the author discusses the need of Metallurgy for theoretical models and their limits. The development of simple but less accurate models has provided a semi-quantitative approach of many complex metallurgical phenomena that has proven useful to orientate research as well as to afford interpretation-based prediction. Such models can be validated within a narrow range only. These approximate models could be substituted for by elaborated and comprehensive calculations that would provide reliable predictions with the help of ever more efficient computers. It remains a difficult task to take satisfactorily into account every internal parameter and boundary condition of a global system. Furthermore, any new observation requests another calculation that gives a clear picture but no comprehensive understanding of the underlying phenomena. Combining experiments, interpretation and prediction modeling along with few dedicated calculations may eventually allow further progress in such a complex domain as Metallurgy.