利用自行设计的单辊剪切/冷却(SCR)试验机对LY11合金进行了半固态凝固实验,研究了工艺条件对LY11半固态合金组织的影响.结果表明,辊-靴间隙宽度的适当范围为2～3 mm;浇注温度影响半固态合金坯料内部晶粒的大小与形状,浇注温度在730～750 ℃范围内,可获得细小、均匀球状或椭球状晶粒组织;冷却方式会影响半固态合金坯料晶粒的大小与分布,水冷制得的合金晶粒尺寸比空冷的小2～3个级别,而空冷制得半固态合金坯料的晶粒分布较为均匀.
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