To assist the quantitative design of ultra-high strength (UHS) quantum stee
ls containing Pd, a set of self-consistent thermodynamic model parameters i
s presented to describe the phase equilibria of the Cr-Pd and Mo-Pd systems
, These thermodynamic parameters are of importance to control the kinetics
of solid-solid phase transformations, such as martensitic transformation, a
nd precipitation of M2C carbide and austenite, relevant to the design of UH
S steels in the Fe-C-Co-Cr-Mo-Ni-Pd system. The present thermodynamic model
ing complements our previous report on the thermodynamic modeling of the Co
-Pd, Fe-Pd, and Ni-Pd systems to facilitate quantitative design of UHS quan
tum steels.