Official PDF Translation•Journal of Central South University

Microstructure and mechanical properties of additively manufactured FeCoCrMnNi high-entropy alloy composite after aging

Authors: MA Pan; YANG Hong; ZHANG Zhi-yu; XIE Xiao-chang; YANG Ping; KONDA-GOKULDOSS Prashanth; ZHANG Han; JIA Yan-dong

DOI: 10.1007/s11771-025-5929-zStatus: Verified Translated Edition

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Key Findings in This Report

• Aging at 873 K for 2 h induces Al- and Ti-rich nano-oxide precipitates with an orthorhombic CMCM structure in selective laser melted CoCrFeMnNi/NiCoFeAlTi composites. • The aged high-entropy alloy composite achieves an ultimate tensile strength of 731 MPa through multi-scale strengthening. • Strengthening arises from combined precipitation strengthening, dislocation strengthening, and high lattice distortion caused by intragranular defects. • Aging treatment effectively controls precipitate phases in complex multi-element alloys, offering a pathway for high-performance HEAC design.