Evaluation and computational design of Ni₂₅Al₂₅Co₁₅Fe₁₅Ti₈Mn₇Cr₅ high entropy alloy using THERMOCALC

¹ *Centre for Nanoengineering and Advanced Materials, School of Mining, Metallurgy and Chemical Engineering, University of Johannesburg, Johannesburg 2092, South Africa.
² Institute for Nanoengineering Research, Department of Chemical, Metallurgical and Materials Engineering, Tshwane University of Technology, Pretoria, South Africa.

^* Corresponding author: olorundaisiemmanuel@gmail.com.

Abstract

There has been a global demand for cutting-edge materials characterized by exceptional high-temperature performance, lightweight, and cost-effective. This study provides accurate and reliable predictions that can aid in the understanding of the material’s phase and thermo-mechanical properties. The phase formation and total hardness of Ni₂₅Al₂₅Co₁₅Fe₁₅Ti₈Mn₇Cr₅ High Entropy Alloy (HEA) was investigated using THERMOCALC software version 2021b with the TCHEA5 HEAs database. The result shows the presence of BCC, SIGMA, and HEUSLER phases. The activity of the alloying elements shows Ni and Al to be stable at high temperatures, implying that excellent mechanical properties are expected at high temperatures.