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The stability of coherent L1 2 -ordered Ni 3 (Al,Ti) intermetallic precipitates was studied in Fe–14Cr–32Ni–3Nb–(3–4)Al–(1–3)Ti (wt.%) based alumina-forming austenitic stainless alloys. Computational thermodynamics predicted the formation of multi-intermetallic phases, including L1 2 and β-NiAl (B2), in an austenite matrix below ∼900°C. Microstructure characterization revealed...
This work uses molecular dynamics simulation to provide an atomistic view of the contrasting interfacial behavior between high-temperature dry air and wet (10–40vol.% water) air in contact with stainless steels. A key finding was that H 2 O preferentially adsorbs and displaces oxygen at the metal–fluid interface. We also discuss how these findings are consistent with Ehlers et al. proposed...
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