Fabricating antibacterial CoCrCuFeNi high-entropy alloy via selective laser melting and in-situ alloying

A quasi-equiatomic CoCrFeCuNi high-entropy alloy (HEA) with a broad-spectrum antibacterial ability and good mechanical properties has been fabricated by selective laser melting (SLM) and in-situ alloying of a blend of pre-alloyed CoCrFeNi powder and Cu elemental powder. The as-built HEA alloy has a homogeneous distribution of Cu and presents a single FCC phase. Compared with the same HEA fabricated using the traditional ingot metallurgy (IM)...