The structure of stircast Al-6Cu
The structure of stircast Al-6Cu
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DOI：
10.1007/bf00559322
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发表时间：
1985-12
影响因子：
4.5
通讯作者：
J. Molenaar;F. W. H. C. Salemans;L. Katgerman
中科院分区：
文献类型：
--
作者：
J. Molenaar;F. W. H. C. Salemans;L. Katgerman
通过一系列间歇式搅拌实验，研究了Al-6Cu（Al-6wt%Cu）合金中初生固相生长的形态变化与冷却速度和搅拌器转速的关系。实验表明，与未搅拌的合金中的二次枝晶臂间距相比，搅拌铸造组织中的一次颗粒的胞间距由于搅拌而增加。这一结果可以用凝固过程中的热传递来解释。研究表明，大块金属液体中漂浮晶体的固液界面是胞状的。
A series of batch-type stirring experiments have been performed to investigate the morphological changes in the growth of the primary solid phase in Al-6Cu(Al-6 wt% Cu), as a function of the cooling rate and the rotational speed of the stirrer. The experiments show, that the cell-spacings of primary particles in stircast microstructures increase as a result of stirring, when compared to secondary dendrite arm spacings in the unstirred alloy. This result can be explained regarding heat transport during solidification. It is suggested that the solid-liquid interface of floating crystals in bulk metal liquids is cellular.