High-temperature Oxidation Behavior of AlCoCrCuFeNi High-Entropy Alloy by Selective Laser Melting

Laser powder-bed fusion (L-PBF) technology possesses unique advantages in building complex-shape alloys. The microstructure and high temperature low-cycle fatigue behavior of L-PBFed GH3536 superalloy at 855 degrees C were investigated, and the influence of heat treatment on microstructure and fatigue performance was revealed. By combining different fatigue life prediction models, the fatigue damage behavior of L-PBFed GH3536 superalloy at various strain amplitudes was discussed. These results are important for high temperature low-cycle fatigue life prediction and application of additive manufactured metal part.