An empirical model to predict the transformation of δ-ferrite in a niobium-stabilized austenitic weld metal under non-isothermal conditions

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Original languageEnglish
Pages (from-to)261-266
Journal / PublicationMaterials Science and Engineering A
Issue number2
Publication statusPublished - 14 Dec 1991


The kinetics of δ-ferrite transformation in a 16wt.%Cr-8wt.%Ni-6wt.%Mn-(Mo, V, Nb, B) austenitic weld metal have been studied. A "master" equation has been produced to describe the isothermal δ-ferrite transformation behaviour in the temperature range 600-950°C. An empirical model is developed which can be used to predict the fraction of δ-ferrite transformed under non-isothermal conditions. The model involves iterative computation of the "master" equation on isothermal data. Good agreement between prediction and experimental results has been obtained. © 1991.