Three-dimensional network of multi-fold twins enabled by geometrically necessary amorphous zones.

ABSTRACT: Three-dimensional multi-fold twin architectures are valuable for tailoring material properties but constructing them in man-made crystals remains challenging due to angular misfits from incomplete 360° space filling in large volumes, particularly lacking in-situ observations of crystal growth. Here, we successfully create three-dimensional architectures of plural multi-fold twins in a growing FeCoNiCuZn and the other multi-principal element alloy. The inherent chemical composition inhomogeneity entails twin fault energy variation across different {111} twinning planes, activating multiple twinning systems simultaneously. Importantly, we discover the commonly existed geometrically necessary amorphous zones in such three-dimensional multi-fold twin architectures. Combining in-situ transmissi

SUBMITTER: Song Y 

PROVIDER: S-EPMC12748973 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature