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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 paper, an analytical electron microscopy was employed to characterize the early stages of oxidation to aid in developing an understanding of the stress corrosion cracking behavior of Alloy 600. But this alloy is known to be susceptible to SCC.
64 citations
63 citations
08 Feb 2017-Materials Science and Engineering A-structural Materials Properties Microstructure and Processing
TL;DR: In this article, the stress corrosion cracking behavior of X70 steel in simulated shallow and deep sea environments was studied using potentiodynamic polarization measurement, a slow strain rate tensile (SSRT) test and scanning electron microscopy (SEM).
Abstract: The stress corrosion cracking (SCC) behavior of X70 steel in simulated shallow and deep sea environments was studied using potentiodynamic polarization measurement, a slow strain rate tensile (SSRT) test and scanning electron microscopy (SEM). The results indicate that the predominant cathodic reaction changes from an oxygen reduction reaction to the hydrogen evolution reaction as the dissolved oxygen (DO) content decreases. In the simulated deep sea environment, the SCC susceptibility of X70 steel decreased first, reached its lowest point at 15 MPa and then increased as the simulated sea hydrostatic pressure (HP) further increased. This is consistent with the regularity for the change of the cathodic hydrogen evolution reaction current density i H at E corr , which indicates that the HP may influence the SCC susceptibility of X70 steel by changing the permeated hydrogen concentration.
63 citations
15 Jul 1995-Materials Science and Engineering A-structural Materials Properties Microstructure and Processing
TL;DR: In this paper, the pitting potential of Al 6061-based metal matrix composites (MMCs) containing carbon fibres, alumina fibres or silicon carbide whiskers (SiC w ) were studied in chloride solutions.
Abstract: Corrosion characteristics of Al 6061-based metal matrix composites (MMCs) containing carbon fibres, alumina fibres or silicon carbide whiskers (SiC w ) and the effects of ageing heat treatment on the stress corrosion cracking resistance of SiC w Al 7075 MMC were studied in chloride solutions. MMCs were prepared by the squeeze casting method in the laboratory. The pitting potentials for Al 6061 and the three Al 6061-based MMCs were similar. The resistance of SiC w Al 6061 MMC to pit initiation is the same as that of the monolithic alloy. Once pits initiate, damage by pitting corrosion would be greater owing to the formation of crevices between the reinforcement and the matrix by the dissolution of the latter in the pits. The cathodic current of the SiC w Al 6061 is slightly larger than that of the matrix alloy, possibly owing to an interfacial layer observed by transmission electron microscopy. Ageing of SiC w Al 7075 MMC at 170 °C for more than 1 h following ageing at 110 °C makes the MMC resistant to stress corrosion cracking in 3.5% NaCl and increases the pitting potential.
63 citations
TL;DR: In this article, the steady state elongation rate obtained from corrosion elongation curve becomes a relevant parameter for predicting time to failure and also for criterion on assessment of whether SCC takes place or not.
63 citations