β Scribed by Young-Whan Lee; Young-Hwan Choi
No coin nor oath required. For personal study only.
Creep fracture tests were performed on type 304 stainless steel using compact tension type specimens at 873 K in an air environment. Both the creep crack initiation time and the creep crack growth rate were measured as functions of various fracture parameters such as the stress intensity factor, the net section stress, the C* integral and the crack-tip-opening displacement. It is shown that it is possible to correlate the creep crack initiation time with the C* integral; however, the results obtained from experiments are not in agreement with those predicted from the creep crack initiation model based on the critical strain failure criterion. The reasons for this discrepancy are discussed. It is also shown that the creep crack growth rate can be correlated with the C* integral.
π SIMILAR VOLUMES
Ahs&aet-Creep crack propagation behavior at high temperahue was investigated for type 304 stainless steel. The present experiment reveals that creep crack propagation is explained better in terms of K than in terms of L%u. The rate of the creep crack propagation is represented by the Arrheoius equat