The development of alumina-forming austenitic stainless steels for high-temperature structural use

• DOI: 10.1007/s11837-008-0083-2
• Publication Date: 2008-09-12T15:51:06Z
• Authors: M. P. Brady; Y. Yamamoto; M. L. Santella; P. J. Maziasz; B. A. Pint; C. T. Liu; Z. P. Lu; H. Bei
• Keywords: Oxidizing agent; Austenitic stainless steel; Structural material

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.