The effect of titanium and silicon addition on phase equilibrium and mechanical properties of CoCrFeMnNi-based high entropy alloy

Abstract The effects of Ti and Si addition on the phase equilibrium mechanical properties equiatomic CoCrFeMnNi high entropy alloy (Cantor alloy) were investigated. at 1000 °C was determined from result X-ray diffraction electron probe micro-analysis. stabilizes $$\sigma$$ σ phase, A12 C14-Laves while A13 phase. relationships represented by projection onto (Co, Fe, Mn, Ni)–Cr–X(Ti or Si) isothermal ternary cross-section in Co–Cr–Fe–Mn–Ni–X senary system. Tensile tests conducted Cantor-based fcc single solid solution alloys with dissolution room temperature. 0.2% yield strength ultimate tensile increased either element addition. Ti-added showed higher than Si-added alloy. difference ductility is related to their strain hardening behavior range. Graphic abstract