Homogenization of highly alloyed Cu-Fe-Ni: A phase diagram study

Six highly alloyed Cu-Fe-Ni alloys have been processed with different heat treatments and studied by means of electron microprobe and differential thermal analyses. The results are discussed in comparison with an equilibrium phase diagram calculation performed using the CALPHAD (CALculation of PHAse Diagrams) method. An unexpected temperature window for homogenization has been found in the middle of the composition range.