Thermo-physical properties of Al-Mg alloys in molten state at 1073 K have been studied using thermodynamic modeling. Thermodynamic properties, such as free energy of mixing, heat of mixing, entropy of mixing, activiti...Thermo-physical properties of Al-Mg alloys in molten state at 1073 K have been studied using thermodynamic modeling. Thermodynamic properties, such as free energy of mixing, heat of mixing, entropy of mixing, activities and structural properties, such as concentration fluctuation in long wavelength limit, Warren-Cowely short range order parameter have been studied at 1073 K, 1173 K, 1273 K and 1373 K on the basis of regular associated solution model. The surface properties such as surface concentrations and surface tension of the liquid alloys have been studied by using Butler’s model. A consistent set of model parameters have also been obtained by using optimization procedure based on statistical thermodynamics. Our analysis reveals that Al-Mg alloy is moderately interacting and it shows ordering nature at 1073 K. The nature of the alloys changes from ordering to segregating as the temperature increases.展开更多
提出了一种利用FCMAC（Fuzzy Cerebellar Model Articulation Controller）神经网络进行优化的方法。该方法由学习过程和优化过程两部分组成。对于许多没有模型可参考的实际过程，使用该方法只需要传感器的观测信息就能进行优化。仿真...提出了一种利用FCMAC（Fuzzy Cerebellar Model Articulation Controller）神经网络进行优化的方法。该方法由学习过程和优化过程两部分组成。对于许多没有模型可参考的实际过程，使用该方法只需要传感器的观测信息就能进行优化。仿真结果证明了该方法的有效性与优越性，进而提出了在实际应用中进行优化的一种方案。展开更多
文摘Thermo-physical properties of Al-Mg alloys in molten state at 1073 K have been studied using thermodynamic modeling. Thermodynamic properties, such as free energy of mixing, heat of mixing, entropy of mixing, activities and structural properties, such as concentration fluctuation in long wavelength limit, Warren-Cowely short range order parameter have been studied at 1073 K, 1173 K, 1273 K and 1373 K on the basis of regular associated solution model. The surface properties such as surface concentrations and surface tension of the liquid alloys have been studied by using Butler’s model. A consistent set of model parameters have also been obtained by using optimization procedure based on statistical thermodynamics. Our analysis reveals that Al-Mg alloy is moderately interacting and it shows ordering nature at 1073 K. The nature of the alloys changes from ordering to segregating as the temperature increases.
文摘提出了一种利用FCMAC（Fuzzy Cerebellar Model Articulation Controller）神经网络进行优化的方法。该方法由学习过程和优化过程两部分组成。对于许多没有模型可参考的实际过程，使用该方法只需要传感器的观测信息就能进行优化。仿真结果证明了该方法的有效性与优越性，进而提出了在实际应用中进行优化的一种方案。
