Transport and structural properties of metallic glass-forming liquid Cu 50 Zr 50 are investigated by molecular dynamics simulation, under high pressures from 1 bar to 70 GPa. The following results have been obtained: (i) reversals of component diffusion coefficients ( D Cu and D Zr ) are observed at the reversion pressure. At low pressures below the reversion pressure, D Cu / D Zr decreases from about 1.4 to 1.0. At high pressures above the reversion pressure, D Cu / D Zr decreases more rapidly from 1.0 to about 0.7. (ii) Component diffusion coefficients decay exponentially with pressure up to reversion pressure, then the strength of the exponential dependence changes, while the pressure-dependent behavior of viscosity can be well described by a single exponential relation over the full range of pressure. (iii) The Stokes–Einstein relation (SER) works well at ...

中文翻译：

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压力对金属玻璃形成液传输和结构性能的影响

在1 bar至70 GPa的高压下，通过分子动力学模拟研究了金属玻璃形成液Cu 50 Zr 50的传输和结构性能。已经获得以下结果：（i）在回复压力下观察到组分扩散系数（D Cu和D Zr）的回复。在低于回复压力的低压下，D Cu / D Zr从约1.4降至1.0。在高于回复压力的高压下，D Cu / D Zr从1.0迅速下降到约0.7。（ii）组分扩散系数随压力升高到回复压力而呈指数衰减，然后指数相关的强度发生变化，而粘度随压力变化的行为可以通过整个压力范围内的单个指数关系很好地描述。