In-situ manufacturing of ODS FeCrAlY alloy via laser powder bed fusion

•Ball milling is eliminated by the internal oxidation mechanism.•Y–Al–O-enriched oxide nanoparticles had diameters of 10–100 nm.•High enthalpy for oxide formation, and high density of defects activated internal oxidation. Gas-atomized Fe–24Cr–8Al–0.5Y (wt.%) powder was used as a feedstock in a laser...

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