The driving force for martensitic transformation in steels

H. K. D. H. Bhadeshia

Abstract

The free energy change accompanying martensite formation at the {\em M}Stemperature of steels is evaluated using various thermodynamic methods together with relatively accurate and recent thermodynamic data. The free energy change at the martensite-start temperature is rather less than was originally believed. It varies between -900 J/mol and -1400 J/mol, as a function of the carbon content. However, the variation is not monotonic.

Metal Science, Vol. 14, 1980, pp. 230-232

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