Co-Optimization of Wrought Alumina-Forming Austenitic Stainless Steel Composition Ranges for High-Temperature Creep and Oxidation/Corrosion Resistance

Journal Article · Wed Jan 01 00:00:00 EST 2014 · Materials Science and Engineering A

DOI:https://doi.org/10.1016/j.msea.2013.10.014· OSTI ID:1098184

Brady, Michael P ^[1]; Magee, John H ^[2]; Yamamoto, Yukinori ^[1]; Helmick, David ^[2]; Wang, Lu ^[3]

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1. ORNL
2. Carpenter Technology Corporation
3. University of Tennessee, Knoxville (UTK)

A seriesofcandidatealumina-formingaustenitic(AFA)stainlesssteelsdesignedtoevaluatetheeffectsof variationinAl,C,Cr,Mn,Nb,andNicontentonhigh-temperaturetensileproperties,creep,and oxidation/corrosionresistancewerestudied.ThecompositionsassessedwerebasedonmediumNi (20 25 wt%)andlowNi(12wt%)AFAvariationsstrengthenedprimarilybyMCand/orM23C6 carbide precipitates,andahighNi(32wt%)AFAsuperalloyvariationstrengthenedprimarilyby -Ni3Al intermetallic precipitates.Tensileandcreeppropertiesweremeasuredat650and750/760 1C, oxidation resistance from650to900 1C inairwithwatervaporandsteamenvironments,andsulfidation oxidation resistance inAr 20%H2 20%H2O 5% H2S at550and650 1C. Optimizedcompositionrangesfordifferent use temperaturesrangesbasedontheseevaluationsarepresented.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE Office of Energy Efficiency and Renewable Energy (EERE)
• DOE Contract Number: DE-AC05-00OR22725
• OSTI ID: 1098184
• Journal Information: Materials Science and Engineering A, Vol. 590; ISSN 0921-5093
• Country of Publication: United States
• Language: English