中频电磁振荡法制备半固态铝合金浆料的研究

• 作 者: 张琦 曹苗 蔡进 赵升吨
• 机 构: 西安交通大学,
• 出 处: 稀有金属材料与工程
• 发表日期: 2014年08期
• 关键词: 电磁振荡 半固态浆料 固态 中频电磁振荡法 半固态 铝合金 初生α-Al 振荡次数 趋肤效应 电磁搅拌器

采用一种中频电磁振荡法对牌号为ZL104的铝合金进行处理,得到了较为理想半固态浆料组织。主要研究了中频电磁振荡式流变成形法制备半固态铝合金流变浆料过程中,振荡次数对半固态浆料组织形貌的影响,探讨分析了该方法中电磁搅拌器所产生的电磁场对半固态浆料组织的作用。结果表明:该方法操作简单,便于控制;工艺流程短,生产量大,设备成本低;其制备出的半固态浆料组织均匀性好,不存在因电磁场分布不均匀而产生的趋肤效应。优良的半固态浆料组织中初生α-Al的最小平均等效直径为28μm,初生α-Al的形状因子为0.89。

A medium-frequency electromagnetic oscillation method is adopted to treat the aluminum alloy with the grade of ZL104 to obtain the ideal semi-solid slurry structure. The influence of oscillation frequency on the morphology of semi-solid slurry during the preparation of semi-solid aluminum alloy rheological slurry by MF EMT was studied. The electromagnetic field generated by the electromagnetic stirrer in this method was analyzed. Effect on semi-solid slurry organization. The results show that the method is simple and easy to control; the process flow is short, the production volume is large, and the equipment cost is low; the prepared semi-solid slurry has good tissue homogeneity and does not have the skin effect due to the uneven electromagnetic field distribution. The minimum average equivalent diameter of primary α-Al in the fine semisolid slurry was 28 μm and the shape factor of primary α-Al was 0.89.