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Meeting MS&T22: Materials Science & Technology
Symposium Resisting Degradation from the Environment: A Symposium Honoring Carolyn M. Hansson’s Research and Pioneering Experiences as a Woman in STEM
Presentation Title Oxidation Behavior of Model FeCrAl Steel and APMT Alloy After Exposure in Steam
Author(s) Kinga A. Unocic, Kenneth Kane, Yukinori Yamamoto, Bruce A Pint
On-Site Speaker (Planned) Kinga A. Unocic
Abstract Scope Over past few years, number of research has been conducted to address accident tolerant fuel cladding for light water nuclear reactors. Alloys with lower Cr contents are desired for radiation damage resistance during the operation.Thus, a model wrought ferritic Fe-12Cr-6Al-2Mo-0.2Si-0.03Y (wt%) steel (C26M) alloy was studied. For comparison, a commercial Kanthal® APMT alloy (Fe-22Cr-5Al-3Mo-0.6Si-0.18Y) was also evaluated. Both alloys were exposed for a short-time (4 hours) in a) steam and b) air between 1200-1475°C temperature range. Characterization of the alumina scales using scanning transmission electron microscopy (STEM) found that the scale morphology formed in steam was affected by the alloy Y content, which segregated along scale grain boundaries at 1200°C. However, after 4 hours at 1475°C, the scale morphology was drastically different and reactive elements along grain boundaries were diminished. Further, differences in scale morphology in both alloys between air and steam will be discussed.


Characterization of Internal Oxidation in Alloy 690 and Model Ni Alloys
Correlating Crack Tip pH to Environment Assisted Cracking Performance in Al Alloys
Corrosion and Biocompatibility of 316L Stainless Steels Fabricated by Selective Laser Melting
Corrosion and Environmentally Assisted Cracking (EAC) Evaluation of Additively Manufactured (AM) High Strength Precipitation Hardened Steel (UNS S17400)
Corrosion of Fe-Cr-Mn Stainless Steel in Supercritical Water
Evaluating the Sensitivities of SCC Susceptibility in Stainless-steel Nuclear Waste Storage Containers
Galvanic Corrosion of Active and Passive Steel Bars with Different Area Ratios
Investigation of Crack Initiation in Hydrogen Embrittled Ni-base Alloy 725
Liquid Metal Embrittlement: Cracking Open the Disparate Mechanisms
Oxidation Behavior of Model FeCrAl Steel and APMT Alloy After Exposure in Steam
Quantifying the Environmentally Assisted Cracking Initiation and Short Crack Behavior in New Generation 7xxx Aluminium
Relating Microstructure to Environmental Degradation in Al-Mg Alloys
The Effect of Microstructural Surface States on the Corrosion of Additively Manufactured 316 Stainless Steel

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