Effects of Chromium, Copper, Niobium, Sulphur, Tin and Vanadium on the Activity of Carbon in Liquid Iron.

Activity of carbon in liquid iron alloys-II

Abstract

The effects of various elements on the activity coefficient of carbon in liquid iron have been studied by two experimental methods:
(1) Equilibration with controlled mixtures of CO and CO₂; (2) the solubility of graphite in the melt.
The relationship between the activity of carbon and alloying elements, j, are expressed by the following parameters:
For dilute solutions, ε^(j)_σ is obtained as follows:
For C-saturated solution, ε^(j)_σ is as follows: