TERNARY PHASE-DIAGRAMS OF THE MANGANESE-TITANIUM-IRON AND THE ALUMINUM-TITANIUM-IRON SYSTEMS - COMPARISON OF COMPUTER CALCULATIONS WITH EXPERIMENT

Computer calculation of the isothermal sections in the MnTiFe and AlTiFe systems were carried out at 1273K by combining the previously published analytical descriptions of the FeTi, AlTi, FeAl,FeMn and TiMn binary systems. The calculations were carried out in two steps to provide some insight into the advantages and shortcomings of the technique. Initial calculations were conducted based on assumed compound trajectories from the binary systems into the ternary systems coupled with zero values for the ternary interaction parameters of ternary phases. As a second step experimental determination of selected portions of these systems was conducted to provide a check on the initial calculations and provide a basis for refinement. The final stage comprised recalculation of these ternary systems to improve the agreement between calculated and observed results. The final step provides some insight into the initial assumptions and also presents a rational means for extrapolating the current results to higher and lower temperatures. © 1979.