Effect of post-annealing on the oxidation behavior of hot rolled ODS-FeCrAl steel in liquid lead
Source abstract
Abstract
The microstructure of the hot-rolled and annealed ODS-FeCrAl steels and related oxide scales formed in the oxygen-containing liquid lead at 600 °C was investigated by SEM-EDS, EBSD and TEM. The post-annealing caused partial recrystallization of hot-rolled ODS steel, which significantly reduced the intense θ-fiber (<001>||ND) and local dislocation density . After corrosion, the hot-rolled ODS steels exhibited complex and locally uneven oxide scales while the annealed ODS steels formed a uniform triple-layered oxide scale. A new insight into the relationship between oxidation depth and grain orientation was proposed, highlighting the significance of orientation-dependent dislocations on the transition of external/internal oxidation mechanisms.
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Research context
OpenAlex topics: Fusion materials and technologies · Nuclear Materials and Properties · High-Temperature Coating Behaviors
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