Effect of low-frequency magnetic field on microstructures of horizontal direct chill casting 2024 aluminum alloy
Effect of low-frequency magnetic field on microstructures of horizontal direct chill casting 2024 aluminum alloy
复制标题
DOI：
10.1016/j.jallcom.2004.12.020
复制
发表时间：
2005-06
影响因子：
6.2
通讯作者：
Zhi-hao Zhao;J. Cui;Jie Dong;Zhefeng Wang;B. Zhang
中科院分区：
文献类型：
--
作者：
Zhi-hao Zhao;J. Cui;Jie Dong;Zhefeng Wang;B. Zhang
水平直冷铸造是一种成熟的铝合金铸锭生产工艺，但由于冷却不平衡和重力的影响，铸锭有时会出现组织不均匀的问题。为了控制缺陷，在HDC铸造过程中应用了低频电磁场，并对其影响进行了研究。结果表明，低频电磁场可以有效地降低HDC铸件的不均匀组织。电磁场密度和频率这两个主要参数对铸锭沿径方向的组织和溶液分布有显著影响。讨论了电磁场作用的机理。
The horizontal direct chill (HDC) casting process is a well-established production route for aluminum alloy ingots but the ingot may some times suffer from inhomogeneous microstructures due to unbalanced cooling and the effect of gravity. In order to control the defect, a low-frequency electromagnetic field has been applied in HDC casting process and its influence has been studied. The results show that a low-frequency electromagnetic field can effectively reduce inhomogeneous microstructures in HDC castings. Two main parameters of the electromagnetic field—density and frequency, significantly influence the microstructures and solution distribution along the diameter of the ingot. The mechanisms of the effects of electromagnetic field have been discussed.