Abstract
CoCrFeMnNi high-entropy alloy exhibits superior fracture resistance due to its excellent ductility and superb dislocation storage capacity. The additive manufacturing of CoCrFeMnNi alloy not only eliminates some fabrication challenges of casting and powder metallurgy but also provides a characteristic microstructure. The large columnar grains developed via selective laser melting of the CoCrFeMnNi alloy exhibit local changes in orientation upon deformation, which are examined via electron backscatter diffraction (EBSD). Multiple slip systems with the intersecting slip traces at ~70.5° are observed to be activated during the tensile deformation, indicating a higher degree of accommodation of plastic strain in the 3D-printed CoCrFeMnNi HEA.