抄録
The effects of overload on the threshold stress intensity factor (K_<ISCC>) for stress corrosion cracks (SCC) in type 304 austenitic stainless steel (SUS304) were studied. Tensile overload was applied to a wedge opening loaded specimen of SUS304, and SCC tests were carried out to detennine the resultant The value of K_<ISCC> was found to increase with increasing stress intensity caused by tensile overload. Comparison of the effects of tensile overload on K_<ISCC> of SUS304 and SUS316 revealed that the effect on K_<ISCC> of SUS304 was smaller than that of SUS316.
