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Studying the influence of ageing on the stress corrosion cracking initiation of low-carbon steels
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This study examined how different levels of aging (precipitation hardening) in low-carbon, low-alloy steels affect the initiation of stress corrosion cracking. Higher aging levels were found to decrease both the macroelasticity limit and the SCC incubation period, because aging accelerates the onset of microplastic flow that triggers crack initiation.
The paper presents results of a study of the stress corrosion cracking (SCC) processes of lowcarbon low-alloyed steels with different levels of ageing. It is shown that the limit of macroelasticity and the incubation period of the SCC decrease with the increase of the ageing level. This can be explained as follows: the limit of macroelasticity determines the beginning of microplastic flow in the material, actively affecting the process of stress corrosion cracking. Basing on selected test pattern the dependence of the stress corrosion cracking from the ageing level has a three-stage character. Behavior of the chosen characteristic is explained on the grounds of the theory of defects.
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When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.