Abstract
A new family of alumina-forming austenitic stainless steels is under development at Oak Ridge National Laboratory for structural use in aggressive oxidizing environments at 600–900°C. Data obtained to date indicate the potential to achieve superior oxidation resistance compared to conventional Cr2O3-forming iron-and nickel-based heat-resistant alloys, with creep strength comparable to state-of-the-art advanced austenitic stainless steels. A preliminary assessment also indicated that the newly developed alloys are amenable to welding. Details of the alloy design approach and composition-microstructure-property relationships are presented.
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Author’s Note: Part of this research summary is based on a recent review paper (see Reference 1) and findings first reported in References 2–7.
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Brady, M.P., Yamamoto, Y., Santella, M.L. et al. The development of alumina-forming austenitic stainless steels for high-temperature structural use. JOM 60, 12–18 (2008). https://doi.org/10.1007/s11837-008-0083-2
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DOI: https://doi.org/10.1007/s11837-008-0083-2