Precipitation of σ-phase in high-nitrogen austenitic 18Cr–18Mn–2Mo–0.9N stainless steel during isothermal aging
Source abstract
Abstract
Abstract Precipitation mechanism of σ-phase in austenitic high-nitrogen steel (HNS) upon aging was investigated using electron microscopy and thermodynamic calculation. The precipitation sequence was found to be grain boundary Cr 2 N, cellular Cr 2 N and σ-phase with aging time. It was concluded that the nitrogen-depleted zone near Cr 2 N induces the nucleation of σ-phase.
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Research context
OpenAlex topics: Hydrogen embrittlement and corrosion behaviors in metals · Microstructure and Mechanical Properties of Steels · Corrosion Behavior and Inhibition
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References (12)
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