liquid alloy

During the solidification process of Al Fe alloy under centrifugal casting, the primary phase migrates along the radius because of the density difference between the primary phase and the liquid alloy. Therefore the distribution of the primary phase is in gradient along the radius of the casting.

离心铸造Al Fe合金凝固过程中的先析出相与合金液之间具有较大的密度差，在离心力场作用下，先析出相将沿径向由内向外迁移，致使初生相沿铸件径向呈梯度分布。

A thermodynamic criterion for identifying the symmetry of ternary liquid alloy systems with regular solution is described.

结果表明，采用正规溶液模型作为判断实际体系对称性的热力学判据是方便可靠的。

A Thermodynamic Criterion for Judging Symmetry of Liquid Alloy Systems and Its Application to Geometrical Models

几何模型应用于液态合金时体系对称性的一个热力学判据

Problems: The primary stress to which the surface of the mould is exposed are thermal shock, abrasion and chemical reactions between the liquid alloy and the iron in the steel mould.

问题：压铸模具表面主要面临的问题有热冲击、磨损、液态合金与模具钢的化学反应等。