An international team of researchers has observed how iron atoms influence the grain boundaries in titanium, revealing unexpected cage-like structures at the atomic level. Using advanced microscopy and simulations, they found that iron atoms at grain boundaries form icosahedral cages, with titanium atoms at the vertices. This unique arrangement allows dense packing, enabling more iron atoms to cluster within these structures, creating quasicrystalline-like phases. These findings offer new insights into material resilience and durability, suggesting potential pathways to tailor material properties for improved performance in various applications.
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