Effect of carbon on cryogenic tensile behavior of CoCrFeMnNi-type high entropy alloys

Abstract

Therefore in this work we examined cryogenic tensile behavior of the fcc high entropy alloys with different carbon content (0e2 at.%). The alloys had non-equiatomic proportions of principal elements, i.e. Co1Cr0.25Fe1Mn1Ni1. The lower Cr concentration in comparison with the equiatomic alloy led to the higher solubility of carbon confirmed by both ThermoCalc calculations and experimental results; only in the alloy with 2 at.% C a small (<1%) fraction of Crrich M7C3 carbides was found in the as-cast condition