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Crystallization Behavior of an Au Based Metallic Glass at High Temperature

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Document pages: 20 pages

Abstract: The crystallization behavior of Au50Cu25.5Ag7.5Si17 metallic glass after isothermal treatment at different temperatures throughout the entire supercooled liquid region is investigated by ultra-fast calorimetry. The isothermal crystallization products of the glass, especially in the relatively high temperature region, where was difficult to reach via conventional techniques, are identified. Based on the microscopic analysis of the crystallization products, crystallization process and mechanism of the glass at different temperatures are clarified. The grain size evolution of the crystalline phases upon isothermal treatment are discussed through the comparison of theoretical calculation and experimental results.

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