Observation of the formation of liquid droplets in steep temperature gradients
Observation of the formation of liquid droplets in steep temperature gradients
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观察陡峭温度梯度中液滴的形成
DOI：
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
M. Rettenmayr
中科院分区：
文献类型：
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作者：
S. Fischer;M. Rettenmayr
均质粗晶 Al-4wt.%Cu 合金棒在短时间内（几秒）经历陡峭的温度梯度和（部分）熔化。在再凝固微观真实中可以看到θ相或共晶颗粒。这些微观结构特征被解释为以前液体区域的痕迹，特别是颗粒内液滴。以前的液滴的特征在于其形态和尺寸。双峰尺寸分布表明固体中存在两类成核位点。
Rods of a homogenized coarse-grained Al-4wt.%Cu alloy were subjected for a short time (in the order of seconds) to a steep temperature gradient and (partial) melting. θ-phase or eutectic particles are visible in the resolidified micros true ture. These microstructural features are interpreted as traces of former liquid regions, particularly intragranular liquid droplets. The former droplets were characterized with respect to their morphology and size. The bimodal size distribution indicates two classes of nucleation sites in the solid.