应均匀地对整体材料进行热处理，而不可以仅针对材料的一部分。
Heat treatment shall be carried out uniformly over the whole material and never on a part of the material only.
热处理压铸是不可能的，但由于高利率凝固的力学性能主流是好的。
Heat treatment of pressure die casting is not possible but due to the high rate of solidification the mechanical properties are good.
熔体过热处理的弛豫过程和引起的不可逆过程使熔体状态变化出现滞后效应，从而影响定向凝固界面形态稳定性。
The influences of hysteresis and relaxation of melt superheat on the morphological stability of interface in directional solidification were described.
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