The creep life time of a smooth specimen can be predicted using existing la
ws for creep deformation and steady state creep rate. When crack growth beh
aviour is involved, it is necessary to construct a law of creep crack growt
h rate to predict creep fracture life. Creep fracture life can be measured
by integrating the law of creep crack growth rate. One example is the creep
crack growth rate, represented by the parameter Q*. In this study, we inve
stigated the applicability of this prediction method to creep fracture remn
ant life for a cracked specimen. The Omega criterion is proposed to predict
creep fracture remnant life for a smooth specimen for creep ductile materi
als. In this study, the correlation between Q*(L), derived from the paremet
ers Q* and Omega is investigated. The correlation between Q(L)* and Omega p
rovided a unified theoretical prediction law of creep fracture remnant life
for high-temperature creep-ductile materials in the range from smooth to p
recracked specimens.