摘要
建立偏晶合金液—液两相区内第二相液滴碰撞粗化的数学模型．并对Ｚｎ－Ｐｂ合金作数值模拟计算．结果表明，当第二相液滴平均半径＜１μｍ时，布朗凝并起主要作用，当第二相液滴平均半径较大时，重力凝并起主要作用．
A synthetical mathematical model describing the collision coarsening of the second phase droplets in the liquid-liquid temperature range of monotectic alloys has been put forward. Numerical simulation has hen carried out for Zn-Ph alloy. It was found that when the everage droplet radius is smaller than 1 μm. Brownian ripening plays important role. Otherwise gravitational and Marangoni coagulations are the main factors of collision coarsening.
出处
《材料研究学报》
EI
CAS
CSCD
1995年第3期241-244,共4页
Chinese Journal of Materials Research
基金
国家自然科学基金
关键词
偏晶合金
液液相变
碰撞凝并
monotectic alloy, liquid-liquid phase transformation, collision ripening
