Effects of process parameters on warm and electromagnetic hybrid forming of magnesium alloy sheets
Effects of process parameters on warm and electromagnetic hybrid forming of magnesium alloy sheets
复制标题
工艺参数对镁合金板材温电磁复合成形的影响
DOI：
10.1016/j.jmatprotec.2010.05.008
复制
发表时间：
2011-05-01
影响因子：
6.3
通讯作者：
Xia, Zhilin
中科院分区：
文献类型：
--
作者：
Meng, Zhenghua;Huang, Shangyu;Xia, Zhilin
作为最轻的结构金属，镁（Mg）越来越受到工业和学术领域的关注。镁合金零件由于常温下板材成型性较差，主要采用压铸加工。温成形是一种流行的成形方法；以这种方式生产的镁合金板在200-400摄氏度左右表现出优异的成形性。电磁成形（EMF）可以在不需要润滑剂的情况下提高金属板的成形性。在本文中，提出了一种称为温电磁混合成形（WEMF）的新方法。研究了电压、容量和温度对镁合金板胀形高度的影响。结果表明，镁片的凸出高度随着中等放电能量的增加而增加。与单纯增加容量相比，提高放电电压也是增加凸出高度更有效的方法。当放电能量保持恒定时，从室温到230℃，胀形高度先减小（<150℃），然后增加（>150℃）。镁合金板材的成形性能随着温度的升高而提高，而WEMF的成形效率在相似条件下降低。 (C) 2010 Elsevier B.V. 保留所有权利。
As the lightest structural metal, magnesium (Mg) is attracting increasing interest from both the industrial and academic fields. Magnesium alloy parts are mainly processed by die casting due to their poor sheet formability at room temperature. Warm forming is a popular method of forming; Mg alloy sheets produced in this manner show excellent formability around 200-400 degrees C. Electromagnetic forming (EMF) can improve the formability of metal sheets without the need for lubricants. In this paper, a new approach, called warm and electromagnetic hybrid forming (WEMF), is presented. The effects of voltage, capacity, and temperature on the bulging height of Mg alloy sheets are investigated. Results show that the bulging height of Mg sheets increases with moderate discharging energies. Enhancing the discharging voltage is also a more efficient method for increasing bulging height compared to simply increasing the capacity. When the discharging energy is kept constant, the bulging height first decreases (< 150 C) and then increases (> 150 degrees C) from room temperature to 230 degrees C. The formability of Mg alloy sheets improves with increasing temperature, while the forming efficiency of WEMF decreases under similar conditions. (C) 2010 Elsevier B.V. All rights reserved.