中频电磁振荡法制备半固态铝合金浆料的研究

Semi-Solid Aluminum Alloy Slurry Prepared by Intermediate Frequency Electromagnetic Oscillation

摘要:

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28 μm，初生α-Al的形状因子为0.89。

Abstract:

The intermediate frequency electromagnetic oscillation technique was used to obtain the ideal semi-solid metal slurry and billet of the aluminum alloy ZL104. In this research, the proper number of oscillation was mainly discussed when using the intermediate frequency electromagnetic oscillation technique to produce semi-solid slurry. The influence of the electromagnetic fields generated by electromagnetic stirrer on the microstructure of the semi-solid slurry and billet was also analyzed. The results indicate that the method is easy to operate with short process and low-cost equipment. The semi-solid materials obtained from this method are uniform and do not show a skin-effect caused by the electromagnetic field distribution unevenness. Minimum average equivalent diameter of primary α-Al is 28 μm, and the shape factor of primary α-Al is 0.89.