XX Notation Quantity Symbol SI Unit Elastic strain range △Be Plastic strain range △Ep Total strain range △e Ductility D Secondary creep rate s-1 Activation energy H Nm Universal Gas Constant R J/kgK Absolute temperature T K Arrhenius equation constant A Larson-Miller creep parameter P Sherby-Dorn creep parameter Manson-Haford creep parameter P Initial stress Oi N/m2 Time to rupture t Constants of power law equation B,nxx No tu t ion Quantity Elastic strain range Plastic strain range Total strain range Ductility Secondary creep rate Activation energy Universal Gas Constant Absolute temperature Arrhenius equation constant Larson-Miller creep parameter Sherby-Dorn creep parameter Manson-Haford creep parameter Initial stress Time to rupture Constants of power law equation Symbol SI Unit - N/m2 S -