Fig. 1.

Yield strength versus uniform tensile strain. The yellow-shaded area under the banana-shaped dotted curve covers the strength–ductility data of typical conventional metals. The reader is referred to the literature¹¹ for the data points already summarized previously. The open blue circles along the blue dashed line (a guide to the eye) are HNM examples, from refs. ^12–21, examples of recent heterogenous HEAs are shown along the red dashed line, see solid red circles A–E from refs. ^22–25 Case I, the solid green circle, is for a very recent complex alloy containing multicomponent intermetallic nanoparticles²⁶.