本文讨论了稀土元素在铁和钢中的合金化作用。
Alloying functions of rare earth metals (REM) in iron and steels are discussed.
概述了一些常见元素在铝锂合金中的微合金化作用及机理。
This paper summarizes the microalloying mechanism and effects of some elements in Al-Li alloys.
研究结果表明：1 . P - RE复合变质对过共晶铝硅合金的初晶硅和共晶硅都具有良好的变质和细化作用。
The result indicated that: 1. P-RE combination modification can modify both the eutectic Si and primary Si of the hypereutectic Al-Si alloy at the same time.
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