TCP phase predictions in Ni-based superalloys: Structure maps revisited

The traditional methods for predicting the occurrence of deleterious topologically close-packed (TCP) phases in Ni-based superalloys have been based on the PHACOMP and newPHACOMP methodologies. These schemes use the average number of holes N¯h or the centre of gravity of the elemental d-bands M¯d to predict whether or not a given multicomponent alloy will be prone to TCP formation. However, as both these one-dimensional methodologies are...