This paper discusses main factors affecting melt undercooling describes several ways of achieving high undercooling of melt,and analyse the causes of nonequilibrium phenomena in high undercooled melt.

• 讨论了影响熔体过冷度的主要因素,介绍了获得熔体深过冷的几种主要方法,分析了深过冷熔体的非平衡现象产生的原因。