A STUDY OF IRON-MANGANESE SULPHIDES IN IRON AT HIGH TEMPERATURES

Abstract

This thesis describes a study of the portion of the iron- manganese-sulphur constitution diagram important in steel solidification and ingot soaking (1300°C). Attempts were made to determine a ternary isotherm at 1300°G by microanalysis of samples comprising Mn and FeS contained in and equilibrated with iron pots. A levitation melting technique was used to equilibrate Fe-Mn sulphide and Fe at 1535°C· Diffusion couples between solid Fe - 3.16% Mn and liquid FeS wore reacted at l300°C, quenched and then microanalyzed to determine the stages by which manganese in the iron diffuses to the sulphide phase to produce the BMnS inclusions found in many stools.