Unveiling the mechanisms of strength-ductility synergy in an additively manufactured nanolamellar high-entropy alloy.

ABSTRACT: The combination of alloy design and advanced manufacturing techniques inspires solutions to critical engineering challenges, such as simultaneously achieving high strength and high ductility in structural alloys. Eutectic high-entropy alloys (EHEAs) are particularly promising for their integration of both strong and ductile phases. Here, using valence electron concentration as a criterion, we employ laser powder bed fusion (L-PBF) to fabricate Al₁₉Co₂₀Fe₂₀Ni₄₁ EHEA with a nanolamellar microstructure, chosen specifically for its increased fraction of ductile face-centred cubic phase. The EHEA processed by L-PBF demonstrates a combination of high yield strength exceeding 1.3 GPa and large uniform elongation of 20%. This strength-ductility synergy a

SUBMITTER: Gao S 

PROVIDER: S-EPMC12606152 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature