Abstract Scope |
High-entropy alloys (HEAs) have excellent physical, chemical and mechanical properties, such as high strength and hardness, excellent corrosion resistance and thermal stability. For investigation the Ni addition effect into Co-Cr-Fe-Mn-Ni HEAs, the calculation of phase diagram (CALPHAD) method was applied to calculate the constituents of alloys, and the Pandat software with the PanHEA database was used for simulation. Seven CoCrFeMnNix (x= 0.21, 0.44, 0.7, 1.0, 1.33, 1.71 and 2.15 in molar ratio) alloys were prepared. The calculation and experiment results revealed that the seven alloys mainly composed of FCC phase. However, Alloy 1 (x= 0.21) had two phases after heat treatment. For the other alloys, the calculation results were mostly consistent with experimental results. For corrosion behavior test, alloy 5 (x= 1.33) has the lowest corrosion rate. Because Alloy 1 (x= 0.21) has the second phase that is Cr-rich phase, the highest hardness value was measure in Alloy 1. |