Abstract
The effects of overload on the threshold stress intensity factor for stress corrosion crack (KISCC) of stainless steel were studied. Tensile overload was applied to a wedge opening loaded (WOL) specimen of SUS316. Then, SCC tests were carried out to determine the resultant KISCC. As a result, the appareut value of KISCC increases as increasing a stress intensity factor by tensile overload (KOV) . The effects of tensile overload on KISCC and the threshold stress intensity factor range for fatigue (ΔKth) were compared. It was found that the effects of tensile overload on KISCC were larger than that on ΔKth.
