Computational Investigation Of Aluminum Content Effects On The Characteristics Of NiCrCoFeMnAl High-entropy Alloy

Multi-component alloys(MCAs),also called high-entropy alloys(HEAs),are another kind of compound created by combining at least five components in equal or significant quantities.Because of their potential to have desirable properties,materials science and engineering are currently focusing on these alloys.In addition,research demonstrates that some HEAs outperform conventional compounds regarding solidarity to-weight proportion,crack obstruction,rigidity,and protection from oxidation and corrosion.Quite possibly of the most crucial aspects of present-day materials science is the design of this kind of material.Currently,the entire range of newly developed HEA materials as well as the potential properties of those materials is only rarely known.Obtaining multicomponent alloys presents a challenging scientific and technological endeavor.Therefore,achieving the desired properties in an alloy necessitates meticulous design of the constituent elements and their respective concentrations,as well as accurate prediction of their properties.In this study,we explore the influence of aluminum concentration on the phase composition and various properties(including density,Young’s modulus,hardness,electrical conductivity,thermal conductivity,and molar volumes)of Ni Cr Co Fe Mn Al high-entropy alloys after heat treatment at 600°C.The outcomes are obtained through comprehensive computer modeling,facilitating reliable predictions of material properties.The findings from the simulation indicate that the concentration of aluminum has a notable impact on the material’s phase composition.As the concentration of aluminum increases,there is a corresponding rise in the presence of the β-phase(Ni Al intermetallic compound)within the material.Simultaneously,the content of the solid solution with an FCC lattice(Gamma phase)decreases.With an increase in the aluminum content within the material,there is a decrease in the values of density and Young’s modulus,while the electrical and thermal conductivity as well as the molar volume increase.The hardness of the material undergoes variations with increasing aluminum concentration,whereby some cases exhibit an increase in hardness values while others demonstrate a decrease.