Fig. 1
From: Engineering atomic-level complexity in high-entropy and complex concentrated alloys
Proportional relationship between electronegativity difference and solid-solution strength in complex concentrated and high-entropy alloys. a A historical sketch showing an upward trend in the number of principal elements (≥5 at.%) constituting general alloy systems over the past centuries. It includes Cu-, Fe-, Al-, Mg-, Ti-, and refractory alloys as well as superalloys (Ni-based or Co-based), amorphous and high-entropy alloys. b Electronegativity differences among the constituting elements Δχ versus experimentally measured solid-solution strengths σSS of 3d CCAs25 for solid-solution strengthening relation. The experimentally measured solid-solution strengths are listed in Supplementary Table 1
