Effect of Low-Frequency Electromagnetic Vibration on Cast-ability, Microstructure and Segregation of Large-Scale DC Ingots of a High-Alloyed Al
Effect of Low-Frequency Electromagnetic Vibration on Cast-ability, Microstructure and Segregation of Large-Scale DC Ingots of a High-Alloyed Al
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低频电磁振动对高合金铝大尺寸直流铸锭铸造性能、显微组织和偏析的影响
DOI：
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发表时间：
2005
期刊：
影响因子：
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通讯作者：
D. Wenjiang
中科院分区：
文献类型：
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作者：
Dong Jie;Cui Jianzhong;Zeng Xiao;D. Wenjiang
低频电磁振动铸造(LFEVC)是为铸造大型高合金化Al-锌-镁-铜-锆合金铸锭而开发的，具有超高的强韧性。与传统的直接冷却铸造相比，LFEVC能显著改善铸件表面质量，降低热裂倾向，产生更细小、均匀、等轴的组织，并随着交直流安匝数的增加，大大抑制宏观偏析和晶界偏析。在实验所采用的交流和直流电流匝数范围内，最优条件为交流电流为9000at，直流电流为14300at。
Low-Frequency Electromagnetic Vibrating Casting (LFEVC) was developed to cast large-scale highly alloyed Al-Zn-Mg-Cu-Zr ingots for super-high strength and toughness. Compared with conventional Direct Chilling Casting (DC), LFEVC can significantly improve surface quality, decrease hot-tearing tendency, generate finer, more uniform and equiaxed microstructures, and greatly suppress macro segregation and grain boundary segregation with increasing alternate and direct current ampere turns. In the range of alternate and direct current ampere turns employed in the experiments, the optimum condition is that the alternate current ampere turns is 9,000 At and the direct current ampere turns is 14,300 At.