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. 2019 Dec 9;10:5623. doi: 10.1038/s41467-019-13311-1

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© The Author(s) 2019

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 2 — Example microstructures of highly heterogeneous HEAs. a Multicomponent intermetallic nanoparticles (MCINP)-strengthened FCC (FeCoNi)₈₆-Al₇Ti₇ (Ll₂) HEA (from ref. ²⁶. Reprinted with permission from AAAS). b Heterogeneous grain structured (HGS) CrCoNi MEA²³. c Transformation-induced plasticity (TRIP) dual-phase Fe₅₀Mn₃₀Co₁₀Cr₁₀ HEA³³. d Al_0.5Cr_0.9FeNi_2.5V_0.2 HEA with ordered Ll₂ precipitates and disordered FCC matrix³⁸. e Dual-phase eutectic lamellae AlCoCrFeNi_2.1 HEA³⁶. f Al_1.3CoCrCuFeNi HEA of Al–Ni-enriched matrix with Cr–Fe-enriched plates³⁷. g BCC single-phase TiZrHfNb HEA. Inset: (TiZrHfNb)₉₈O₂ HEA. OOCs ordered oxygen complexes²². h Hierarchical features infused HGS HEA, consisting of partially recrystallized grains of large size and completely recrystallized grains of fine size ³⁹.