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Correlation of the fragility of metallic liquids with the high temperature structure, volume, and cohesive energy

机译:金属液体脆性与高温结构,体积和粘性能量的相关性

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The thermal expansion coefficients, structure factors, and viscosities of twenty-five equilibrium and supercooled metallic liquids have been measured using an electrostatic levitation (ESL) facility. The structure factor was measured at the Advanced Photon Source, Argonne, using the ESL. A clear connection between liquid fragility and structural and volumetric changes at high temperatures is established; the observed changes are larger for the more fragile liquids. It is also demonstrated that the fragility of metallic liquids is determined to a large extent by the cohesive energy and is, therefore, predictable. These results are expected to provide useful guidance in the future design of metallic glasses. Published by AIP Publishing.
机译:使用静电悬浮(ESL)设施测量了二十五个平衡和过脱碳金属液体的热膨胀系数,结构因子和粘度。 使用ESL,在高级光子源,氩气中测量结构因子。 建立了液体脆性和高温下结构和体积变化之间的明显连接; 对于更脆弱的液体,观察到的变化更大。 还证明了金属液体的脆性在很大程度上通过粘性能量确定,因此可预测。 这些结果预计将在未来的金属眼镜设计中提供有用的指导。 通过AIP发布发布。

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