A generalised, multi-phase-field theory for dissolution-driven stress corrosion cracking and hydrogen embrittlement
Overview
Paper Summary
This paper introduces a new multi-phase-field theory to model stress corrosion cracking (SCC), combining hydrogen embrittlement and material dissolution effects. It successfully predicts SCC behavior across various environments and loading conditions, showing how pits and other defects can accelerate corrosion, and how initially dissolution-driven cracks can become hydrogen-dominated over time.
Explain Like I'm Five
Scientists figured out how cracks in metal get worse when the metal slowly gets eaten away and invisible hydrogen gas makes it weak. They found that this "eating away" can start the crack, but then the hydrogen makes it much worse.
Possible Conflicts of Interest
None identified
Identified Limitations
Rating Explanation
This paper presents a novel generalized theory for stress corrosion cracking, incorporating both hydrogen embrittlement and dissolution mechanisms. The multi-phase-field approach allows for capturing complex interactions between different physical processes involved in SCC. The model is validated against experimental data and provides new insights into the transition between different SCC mechanisms. While some limitations exist, such as uncertainties in hydrogen degradation parameters, the overall methodology is strong and the findings are significant.
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