The value of hypereutectic Al Si alloys is their fine primary silicon particles.
而使高硅铝合金充分发挥实用价值的关键是细化初晶硅。
At higher overheating temperature, the shape of primary silicon becomes the star-shape and tree-shape.
随着熔体过热温度的升高， 凝固组织中初生硅形状由多边形向星形及树枝状转变。
The primary silicon particles precipitating from the solidification of Al-Si hypereutectic alloy was regarded as inclusions.
将铝硅过共晶合金凝固过程中析出的初生硅颗粒视为夹杂物颗粒。
The amount of segregated primary silicon grains increases with increasing magnetic gradient, whereas the grain size decreases.
当磁场强度不变，随着磁场梯度的增大，初晶硅的偏聚量增加，晶粒尺寸变小。
With the increase of modifying temperature, the modification of rare earth Pr enhances on primary silicon, fades on eutectic silicon.
随着变质温度的升高，稀土对初晶硅的变质作用加强，而对共晶硅的变质作用减弱。
With the increase of modifying temperature, the modification of rare earth Pr enhances on primary silicon, fades on eutectic silicon.
随着变质温度的升高，稀土对初晶硅的变质作用加强，而对共晶硅的变质作用减弱。
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