62434 2024 eng lecture 0 -- -- -- The oxidation behaviour of any alloy is a key issue which determines whether this material is suited for application. In this study, a single-phase equiatomic CrFeNi alloy was exposed to synthetic air at 1000 - 1100 °C for 24 - 1000 h and compared to 316L steel. The oxidation rate of CrFeNi was parabolic at the lower temperatures 1000 °C and 1050 °C, but at 1100 °C a first breakaway occurred after 4 h of exposure. In all cases, the oxide scales were found to partially spall off. As expected, Cr diffuses outwards to form a Cr2O3 layer at the gas/oxide interface. A thin layer of (Cr, Fe, Ni)3O4 is identified at the oxide/alloy interface. The CrFeNi alloy does not show any catastrophic oxidation behaviour at the investigated conditions unlike the 316L alloy, which contains more Mn and Fe. MSE 2024 Darmstadt, Germany 24.08.2024 26.08.2024 0 publish false true Anna Maria Manzoni eng uncontrolled Corrosion eng uncontrolled Medium entropy alloy eng uncontrolled Scanning electron microscopy Ingenieurwissenschaften und zugeordnete Tätigkeiten 5 Werkstofftechnik 5.1 Mikrostruktur Design und Degradation Material Degradationsmechanismen Datei im Netzwerk der BAM verfügbar ("Closed Access") Präsentation