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将三维振动技术应用于半固态合金制备中。在自制的倾斜冷却装置内安放扰流柱,制备半固态Al-9Si-Mg合金水淬试样,用定量分析技术分析试样组织,研究了Z方向振动、YZ方向振动和XYZ方向振动时,振动频率对半固态Al-9Si-Mg合金组织的影响。结果表明,在Z、YZ和XYZ方向振动时,随着振动频率的增加,晶粒尺寸逐渐减小,晶粒形状趋于圆整;在振动频率为30Hz时,无论是在Z、YZ和XYZ方向振动时,微观组织中都存在少量枝晶,随着振动频率的增加,枝晶消失;XYZ方向同时振动、振动频率为50Hz时,得到的组织晶粒最细小,其晶粒尺寸为6.58μm,形状因子为0.59。
Three-dimensional vibration technology used in the preparation of semi-solid alloys. The semi-solid Al-9Si-Mg alloy water-quenched sample was prepared in a self-made incline cooling device. The sample was analyzed by quantitative analysis technique. When the Z-direction vibration, YZ-direction vibration and XYZ- Effect of Vibration Frequency on Microstructure of Semi-solid Al-9Si-Mg Alloy. The results show that with the increase of vibration frequency, the grain size decreases and the grain shape tends to be round. When the vibration frequency is 30 Hz, no matter in the Z, YZ and XYZ directions, In the direction of vibration, a small amount of dendrites existed in the microstructure, and the dendrite disappeared with the increase of the vibration frequency. At the same time, the XYZ directions vibrated simultaneously. When the vibration frequency was 50Hz, the microstructure was the smallest and the grain size was 6.58μm , Shape factor of 0.59.