综述了包晶合金定向凝固中包晶相的形核与生长机制,讨论了利用最高界面生长温度假设以及成分过冷和充分形核判据下包晶合金的微观组织与相选择规律,对包晶相的3种生长机制进行了分析,并在Sn-Cu包晶合金定向凝固实验中发现其包晶反应不仅存在于凝固界面处,在后续冷却过程中也能进行,最后针对国内外包晶合金定向凝固研究的现状,提出了其需要进一步研究的问题.
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