Time-Temperature-Transformation Diagram of Alloy 945

Commercially produced INCOLOY ® alloy 945 was annealed and heat-treated in the temperature range of 650˚C to 982˚C for the times of 15 minutes to 100 hours.Heat-treated specimens were tested for hardness, optical metallography, scanning electron microscopy (SEM), energy dispersive x-ray (EDX) analysis of bulk and electrolytically extracted residue, x-ray diffraction (XRD) of the residue and transmission electron microscopy (TEM) to develop understanding for phase stability.Data generated from these analytical techniques is presented in the form of a time-temperature-transformation diagram (TTT).