采用等效比热法来确定液相分数，假定固液相等同区来解决工件熔化区与非熔化区的移动边界。
Equivalent latent heat was adopted to determine liquid quantity and solid-liquid identity was adopted to solve moving interface between molten and solid region.
结果表明，随着S含量的增加，导致固液两相区、温度范围和偏析程度明显加大，引起合金的热塑性降低。
The results showed that the solid liquid phase zone, temperature interval and segregation degree may be obviously enlarged with increasing s content so as to reduce the hot plasticity of the alloy.
一种铸型温度为固液两相区温度的铸造设备与方法，属于金属铸造技术领域。
The invention discloses casting equipment and a casting method using solid-liquid two-phase region temperature as casting mold temperature, and belongs to the technical field of metal casting.
在铸坯凝固末端轻压下直接作用区域，两相区受到压缩，枝晶间富含溶质的液相被挤出，相对于铸坯向液芯方向流动。轻压下之后，铸坯中心区域由糊状区内被压缩的固相及残留的液相构成，中心区域偏析指数下降。
The simulation results show that mushy region is compressed and interdendritic solute-rich liquid flows toward the liquid core in the soft reduction action zone at the solidification end of the slab.
随着固液界面向上移动，液相区自然对流逐渐增强，流动状态不断变化。
With the solid-liquid interface moving upwards, the effect of natural convection is enhanced and the flow patterns change continually.
随着固液界面向上移动，液相区自然对流逐渐增强，流动状态不断变化。
With the solid-liquid interface moving upwards, the effect of natural convection is enhanced and the flow patterns change continually.
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