Abstract
In conventional crystals, the 180° domain is generally reflected by the inversed arrangement of the orientation of unit cells in nearby domains. Herein, we report a special 180° domain related to the inverse arrangement of structural blocks in structurally complex phases in an Al60Cr20Fe10Si10 alloy. The structural features were investigated in detail by high-angle annular dark-field scanning transmission electron microscopy with atomic resolution. Furthermore, the corresponding projected structural models of the domain boundaries were proposed. Finally, the structure and the formation mechanism of the 180° domain are compared and discussed with an antiphase domain in the same alloy system.
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