|About this Abstract
|2023 TMS Annual Meeting & Exhibition
|Environmental Degradation of Additively Manufactured Alloys
|Electrochemical Behavior of Laser Powder Bed Fusion FeCrAl Alloys
|Rupesh Rajendran, Rajnikant V Umretiya, Vipul K Gupta, Richard J Blair, Andrew K Hoffman
|On-Site Speaker (Planned)
FeCrAl alloys are leading candidate materials for accident tolerant fuel (ATF) cladding applications in light water reactors (LWR) and have shown high resistance to hydrothermal corrosion, high temperature steam oxidation, fretting, and creep behavior. To take advantage of the versatility offered by the additive manufacturing process and to expand on the applications space, C26M (Fe12Cr6Al2Mo) samples were fabricated via laser powder bed fusion (LPBF) process. Previous studies have shown that AM FeCrAl alloys have excellent resilience to high temperature steam oxidation in nuclear reactor accident scenarios. In our work, the electrochemical behavior of the samples was studied in 3.5% NaCl environment using cyclic polarization and electrochemical impedance spectroscopy techniques. The results are compared with equivalent alloys manufactured via cast and forged and powder metallurgical routes to understand how the difference in microstructures as a result of processing routes affect the electrochemical behavior.
|Additive Manufacturing, Environmental Effects, Nuclear Materials