Identification and determination of titanium sulphide and carbosulphide compounds in steel

Abstract

As part of the experimental work to identify titanium compounds formed to control sulphide morphology in high-strength low-alloy steels, heats with special additions of titanium were melted. It was determined that five titanium compounds could be distinguished from one another by differential thermal analysis-evolved gas analysis techniques. Further, by analysing residues obtained by using both the acid and the ester-halogen methods of dissolving the matrix, it was possible to quantify the results for the five titanium compounds.The results showed that every experimental heat or experimental alloy examined contained Ti4C2S2 and that one sample contained both Ti4C2S2 and γ-Ti2S. Another unidentified titanium sulphide was thought to be present in one of the steels.