Research on solidification structure refinement of pure aluminum by electric current pulse with parallel electrodes
Research on solidification structure refinement of pure aluminum by electric current pulse with parallel electrodes
复制标题
平行电极电流脉冲细化纯铝凝固组织的研究
DOI：
10.1016/j.msea.2008.01.052
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发表时间：
2008-08-25
期刊：
影响因子：
6.4
通讯作者：
Zhai, Qijie
中科院分区：
文献类型：
--
作者：
Li, Jie;Ma, Jianhong;Zhai, Qijie
研究了平行电极电流脉冲（ECP）对纯铝凝固组织的影响。实验结果表明，在熔融金属开始成核之前施加ECP不能使凝固组织细化。然而，在形核阶段应用ECP可以实现凝固组织的显著细化。此外，在相同冷却条件下，平行电极的ECP比上下电极的ECP有更好的细化效果。并提出了平行电极法制备ECP的机理。(c) 2008 Elsevier B.V.版权所有
The influence of electric current pulse (ECP) with parallel electrodes on the solidification structure of pure aluminum has been investigated. The experimental results indicate that the solidification structure cannot be refined when the ECP is applied before the molten metal starts nucleating. However, significant refinement of the solidification structure can be achieved by applying ECP during the nucleation stage. In addition, under the same cooling conditions, ECP with parallel electrodes has better refinement effect than ECP with up-down electrodes. The refinement mechanism of ECP with parallel electrodes has also been proposed. (c) 2008 Elsevier B.V. All rights reserved.