Topic
Stress corrosion cracking
About: Stress corrosion cracking is a research topic. Over the lifetime, 11340 publications have been published within this topic receiving 138157 citations.
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TL;DR: In this article, cold work accelerates stress corrosion cracking (SCC) growth rates in Alloy 600 (UNS N06600), and the variation in crack growth rates generated from cold-worked material has been sign...
Abstract: Cold work accelerates stress corrosion cracking (SCC) growth rates in Alloy 600 (UNS N06600). However, the variation in crack growth rates generated from cold-worked material has been sign...
54 citations
01 Jan 1979
Abstract: The application of slow dynamic straining to specimens to facilitate stress corrosion cracking (SCC) now has been in use for more than a decade, and the test is beginning to emerge as one that has much more relevance thanthe rapid sorting test to which its early use was related. The importance of creep effects in constant load testing is considered, and it is shown that reasonable predictions of threshold stresses for SCC can be made from relevant creep data and that the effects of prior creep upon the incidence of cracking and of the phenomenon of non-propagating cracks below the threshold stress are all in agreement with the concept of the crack tip strain rate playing a major role, even under constant load conditions. The reasonable correlation between appropriate strain rate and constant load tests is therefore not surprising, nor is the reduction in threshold stress by dynamic straining, with or without cyclic loading, over that observed for constant loads.
54 citations
20 Mar 2013
54 citations
TL;DR: Pitting and crack nucleation at the early stages of stress corrosion cracking (SCC) under ultra-low elastic load were studied in this article, where the preferential SCC initiation sites are at the shoulders, rather than at the bottoms of the surface pits/defects.
54 citations
TL;DR: In this article, the influence of the chemical properties of supercritical water on the oxide layers of a light water reactor was investigated using optical, SEM/EDX and Auger spectroscopy as well as the oxidation kinetics.
Abstract: Supercritical Water Reactors (SCWRs), one of the concepts considered by the Generation IV International Forum, are an attractive option due to their high thermal efficiency, 45% vs. 33% for current Light Water Reactors (LWR) and their more simple design. The reference design for the European SCWR is a direct cycle system operating at 25 MPa with core inlet temperatures of 280 and average core outlet temperature of 500 °C. In this range of temperatures, shifting from subcritical to supercritical conditions, there is a sharp change in water density as well as in chemical properties, such as dielectric constant and ionic product. These changes in properties could influence the behavior of austenitic alloys and other materials to oxidation and stress corrosion cracking, providing unexpected responses in the light of the available knowledge for LWRs. Oxide layer characteristics are relevant to both stress corrosion cracking and corrosion product transport.Oxidation experiments on austenitic alloys, 316 L SS, Alloy 600 and Alloy 625, and F/M T91 were performed at two temperatures, 400 °C and 500 °C, and 25 and 30 MPa in order to explore the influence of the chemical properties of supercritical water on the oxide layers characteristics. Results from the characterization of the oxide layers by optical, SEM/EDX and Auger spectroscopy as well as the oxidation kinetics are discussed.
54 citations