fig1

Figure 1. Conceptual development of eutectic high-entropy alloys (EHEAs). (A) Eutectic solidification and representative characteristics of the as-cast microstructure. (B) Representative lamellar, directionally solidified herringbone, and processed heterogeneous microstructures, together with the principal microstructural variables for property regulation. (C) Future directions involving predictive design, manufacturing and scale-up, service evaluation, and application-specific EHEAs. The as-cast lamellar micrograph in (A) was obtained by the authors. The directionally solidified herringbone micrograph in (B) is adapted from Ref.^[7] with permission from AAAS. The phase-selectively recrystallized micrograph in (B) is adapted from Ref.^[8] under CC BY 4.0; the original image was cropped, resized, and incorporated into the present composite figure. The two photographs in (C) showing industrial manufacturing and a large-scale component were taken by the authors.