Columnar to Equiaxed Transition in Al-Cu-Ag
Columnar to Equiaxed Transition in Al-Cu-Ag
复制标题
Al-Cu-Ag 中的柱状到等轴转变
DOI：
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发表时间：
2010
期刊：
影响因子：
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通讯作者：
L. Froyen
中科院分区：
文献类型：
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作者：
E. Nagels;L. Froyen
本文研究了Al-Cu-Ag三元系中L=> α（Al）+ θ-Al_2Cu一元共晶在凝固过程中由柱状晶向等轴晶的转变。三元系中的柱状晶向等轴晶转变（CET）的行为与二元系中观察到的CET非常相似[1]。观察到，当第三合金元素（在这种情况下为Ag）的量增加时，CET发生在较低的温度梯度下。另一个重要的凝固参数是炉的冷却速率。当冷却速率增加时，CET将发生在样品中温度梯度较低的较低位置。
In this work the transition from columnar to equiaxed growth is studied during the solidification of the univariant eutectic L=> α(Al) + θ-Al2Cu in the ternary Al-Cu-Ag system. The columnar to equiaxed transition (CET) in a ternary system behaves very similar to the CET observed in binary systems [1]. It is observed that the CET occurs at lower temperature gradients when the amount of the third alloying element, in this case Ag, is increased. Another important solidification parameter is the cooling rate of the furnace. When the cooling rate is increased, the CET will occur at lower positions in the sample where the temperature gradient is lower.