Abstract
Influences of stress wave forms and superposition of vibratory stresses at the periods of the maximum stress under a low-frequency varying load on cyclic SCC have been investigated with a high-strength aluminum alloy, and the loading condition dominating over cyclic SCC and the competition between cyclic and dynamic SCC have been discussed. The threshold stress intensity factor for cyclic SCC, Kmax = KFSCC, is independent of hold time at the maximum stress, but increases with a decrease in varying load rates per time K^^·. At higher ΔK%lt;eff%gt;, however, da/dN is enhanced with a decrease in ΔK^^·%lt;eff%gt; i.e., at longer rise time; this is similar to those of conventional corrosion fatigue. On the other hand, the superposition of vibratory stresses promotes corrosion products-induced wedge effects with Kop =Kmax. In this case, KFSCC is determined by the threshold stress intensity factor, KDSCC, for dynamic SCC under the secondary vibratory stress condition.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
