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 paper, the results of these environmental tests were compared with those obtained in laboratory air to characterize the effect of aging treatment on corrosion fatigue susceptibility and showed that overaging treatments used to improve grain boundary characteristics and increase the intergranular SCC resistance might not guarantee an equivalent improvement in the resistance to transgranular CF cracking.
55 citations
TL;DR: In this paper, the authors investigated the sensitivity of 304H stainless steel to stress corrosion cracking and found that the sensitivity increased with increasing sensitization time and temperature, which was confirmed by microstructure examination after EPR test.
55 citations
TL;DR: In this paper, Alloy 600, a 76 nickel-15 chromium-7 iron alloy, has excellent corrosion resistance in pressurized high temperature water, and the present tests were undertaken.
Abstract: Numerous tests have shown that Alloy 600, a 76 nickel-15 chromium-7 iron alloy, has excellent corrosion resistance in pressurized high temperature water. The present tests were undertaken...
55 citations
TL;DR: In this article, a coupled mechano-chemical peridynamic model is proposed to describe stress corrosion cracking, and two mechanisms, stress-dependent anodic dissolution and diffuse corrosion layer-assisted fracture, are considered to influence pitting and crack propagation in stress corrosion.
Abstract: We introduce a coupled mechano-chemical peridynamic model to describe stress corrosion cracking. In this model, two mechanisms, stress-dependent anodic dissolution and diffuse corrosion layer-assisted fracture, are considered to influence pitting and crack propagation in stress corrosion cracking. Diffusion peridynamic bonds (acting as dissolution bonds at the solid/liquid interface) and mechanical peridynamic bonds are used to represent the interactions between material points. Mechanical bonds can be damaged by mechanical stretching or by anodic dissolution. The magnitude of the dissolution fluxes for diffusion peridynamic bonds depends on both mechanical deformation and the applied electrical potential. The coupling between anodic dissolution and mechanical damage leads to cracks that initiate in the corrosion damage layer and propagate into the bulk. A 2D three-point bending/corrosion test demonstrates the concept. We verify the model in 3D using an experimental test from the literature for the case of stress-corrosion cracking process in a steam turbine steel sample. The model's results capture the pit-to-crack transition time, the pit size and shape at fracture, as well as the morphology of cracks that spring from, and connect the pits.
55 citations
TL;DR: In this article, a modified Devanathan dual cell was used in environmentally assisted cracking (EAC) tests to independently control the concentration of dissolved hydrogen and anodic current density, and experimental evidence indicates that the corrosion may reduce the micro-hardness of steel, suggesting a dissolution-induced degradation of the surface layer.
55 citations