Effects of retained austenite stability on the electrochemical activity and stress corrosion cracking of ultrafine bainite steel in a marine environment
Source abstract
Abstract
This work investigated the effects of retained austenite (RA) stability on electrochemical activity and stress corrosion cracking (SCC) of ultrafine bainitic (UFB) steel in marine environment. Under pre-strained condition, RA underwent transformation and strain-induced martensite formed, which increased the number of crystal defects in steels. Moreover, the micro-galvanic effect and the high dislocation density in the multiphase complex structure increased the electrochemical activity, which further promoted the SCC susceptibility and crack initiation of the pre-strained steels. However, high pre-strain promoted the transformation of highly stable film-like retained austenite and formed plastic lath martensite, which relatively delayed the crack propagation.
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Research context
OpenAlex topics: Hydrogen embrittlement and corrosion behaviors in metals · Corrosion Behavior and Inhibition · Microstructure and Mechanical Properties of Steels
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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