Microstructure and Tensile Properties of Al0.5CoCrCuFeNi High-Entropy Alloy

Hong Fei Sheng; Liang Ming Peng

doi:10.4028/www.scientific.net/AMM.456.494

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 456Microstructure and Tensile Properties of...

Microstructure and Tensile Properties of Al0.5CoCrCuFeNi High-Entropy Alloy

Abstract:

The Al_0.5CoCrFeCuNi alloy with equiaxed structure was prepared. The as-cast alloy consists of face-centered cubic (FCC) solid-solution with equiaxed matrix and network grain boundaries. Annealing/quenching treatment at 600°C promotes the formations of new BCC structured phase and Cu-rich nanoprecipitations dispersed in grain boundaries, which are beneficial for enhancement in Vickers Hardness and tensile strength. The ultimate tensile stress up to 1002 MPa was achieved after the alloy was annealed following quenching treatment.