Effects of alloying elements concentrations and temperatures on the stacking fault energies of Co-based alloys by computational thermodynamic approach and first-principles calculations
Stacking fault energy (SFE) variations of Co-based alloys with different alloying elements and concentrations are studied. SFE increase with increasing temperature from theoretical and experimental measurements. Both thermodynamic and first-principles methods are capable of calculating the SFE with a highly accurate modeling. The critical role of the Suzuki effect and the key for the SFE variations are investigated.