Creep crack growth tests were performed on CT-specimens of 304 stainless steels at 600℃, varing applied load value and specimen thickness. Crack length was monitored by the electrical potential technique.
Fracrure mechanics parameters governing creep crack growth rate were discussed. Within the limit of experiments in the study, $C^*$-integral and load line displacement rate were found to be pertinent parameters to discribe creep crack growth rate behavior.
The value of applied load and specimen thickness affected little the creep crack growth rate in terms of $C^*$-integral and $δ_t$.
