Abstract
The thermodynamic conditions in which titanium-nitride inclusions are formed in melts of X18H12T and X20H20T austenitic steel melts are calculated on the basis of reference data refined and verified by the authors. Conditions such that the content of TiN aggregations in the steel may be reduced are determined. To simplify the calculations, an easily accessible interactive website has been created. For X20H20T steel, TiN formation is also calculated by means of Thermo-Calc software. The Thermo-Calc results for the TiN solubility considerably exceed the values based on the refined data, which agree with the known experimental data. These discrepancies may be attributed primarily to the refinement of the activity coefficients of titanium in iron-based melts, which has yet to be incorporated in Thermo-Calc software. Recommendations are made regarding the practical use of the results.
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