Fatigue failure mechanism and life prediction of a cast duplex stainless steel after thermal aging
Source abstract
Abstract
Abstract Pressurized piping systems in nuclear power plants made of cast duplex stainless steels (CDSSs) are subjected to thermal aging and fatigue. Low cycle fatigue tests on a nuclear grade CDSS revealed prolonged fatigue lives after thermal aging at 400 °C up to 10000 h. The underlying mechanism is mainly associated with the reduced plastic strain amplitude, which is presumably a result of thermal aging induced ferrite embrittlement and strengthening of austenite. A life prediction model was proposed with austenite microhardness incorporated into the Basquin-Coffin-Manson equation as a variable to reflect the effect of thermal aging.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Fatigue and fracture mechanics · Hydrogen embrittlement and corrosion behaviors in metals · Non-Destructive Testing Techniques
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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