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首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >Glass-formation and crystallization processes in Ag-Y-Cu alloys
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Glass-formation and crystallization processes in Ag-Y-Cu alloys

机译：Ag-Y-Cu合金的玻璃形成和结晶过程

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摘要

Investigation of glass-formation and crystallization processes of several alloys of Ag-Y-Cu system was conducted. The samples were produced by melt spinning and Cu-mold casting. The structure of ribbon samples was examined by X-ray diffractometry and transmission electron microscopy. Phase transformations were studied by differential scanning and isothermal calorimetry and differential thermal analysis. Despite the large difference in atomic radii between the components in the investigated system, even being produced by melt spinning technique at high cooling rate, only Ag _(61)Y _(29)Cu _(10) alloy with large supercooled liquid region was found to be X-ray amorphous. A principle for obtaining an alloy with high glass forming ability involving difference in atomic radii between the alloy components is considered. Efficient cluster packing model was also tested.
机译：研究了几种Ag-Y-Cu体系合金的玻璃形成和结晶过程。样品是通过熔融纺丝和铜模铸造生产的。带状样品的结构通过X射线衍射和透射电子显微镜检查。通过差示扫描和等温量热法以及差示热分析研究了相变。尽管所研究系统中各组分之间的原子半径差异很大，即使通过高转速冷却的熔融纺丝技术生产，也只有具有较大过冷液态区域的Ag _（61）Y _（29）Cu _（10）合金被制造出来。被发现是X射线无定形的。考虑了获得具有高玻璃形成能力的合金的原理，该合金涉及合金成分之间的原子半径的差异。还测试了有效的群集包装模型。

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