Sahil Sura
Ansys Employee

Hello Chandra Sekhar Narra,
Bailey-Norton Creep Law or the Classical Power Law for Creep states the creep strain rate has a dependency on Temperature in K, A material constant defining a creep-temperature relation, the current time, the total uniaxial stress for the respective time, and the constants. This law represents primary and secondary creep in a single formula.

Please find the following discussions and references which may seem helpful in addressing the concerns.
Chapter 4: Nonlinear Material Properties (
Chapter 6: Material Curve-Fitting (
How to find Norton-Bailey Creep Constants? (
Creep (

Hope this helps!