Research Progress on High-Temperature Microstructure and Property Evolution of Super304H Austenitic Stainless Steel
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Abstract
Super304H(18Cr-9Ni-3Cu-Nb-N) austenitic stainless steel is generally used as a preferred material for superheater and reheater tubes in ultra-supercritical boiler. The research progress on the high-temperature microstructure and property evolution of Super304H steel is summarized in terms of the influence of chemical composition on microstructure and properties, the mechanism of precipitates and the influence of the microstructure on high-temperature properties. The further research direction of the high-temperature microstructure and property evolution of Super304H steel is also proposed.
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