首页|Effects of Thermal Aging on the Oxidation Behavior of 316L Austenitic Steel in 600 ℃ Supercritical Fired Boiler:Mechanism Based on Interface Features
Effects of Thermal Aging on the Oxidation Behavior of 316L Austenitic Steel in 600 ℃ Supercritical Fired Boiler:Mechanism Based on Interface Features
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The oxidation behavior of 316L austenitic steel after thermal aging process at 600 ℃ for 6 h was investigated in the super-critical water(600 ℃/25 MPa)with 1000 h.Results showed that the grain size and the proportion of high angle grain boundaries(HAGB)increased in the steel after thermal aging process,with the observation of micro-textures.The weight gain rate of the steel after aging process increased,presenting the decreased Cr2O3 contain in the oxide layer,which resulted in the increasing diffusion rate of Fe and O ions in oxide layer.The molecular dynamics simulation results confirmed the high oxidation rate in HAGB and micro-textures for the 316L steel after aging process.
School of Energy Power and Mechanical Engineering,North China Electric Power University,Beijing 102206,China
State Key Laboratory of Low-Carbon Thermal Power Generation Technology and Equipments,China Special Equipment Inspection & Research Institute,Beijing 100029,China
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