| 机械搅拌对Al及Al-Cu合金铸锭组织和宏观偏析的影响 |
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| 引用本文： | 刘祥,H.Fredriksson,G.Engstm. 机械搅拌对Al及Al-Cu合金铸锭组织和宏观偏析的影响[J]. 东北大学学报(自然科学版), 1986, 0(1) |
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| 作者姓名： | 刘祥 H.Fredriksson G.Engstm |
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| 作者单位： | 东北工学院材料系(刘祥)，瑞典皇家工学院(H.Fredriksson)，瑞典皇家工学院(G.Engstm) |
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| 摘 要： | 研究表明,机械搅拌驱使液态金属作圆周运动,提高了凝固前沿的温度梯度,降低了凝固速度,缩短了柱状晶区宽度,扩大了等轴晶区并细化了等轴晶,同时还促使柱状晶发生倾斜,缩短了一次,二次枝晶间距,并形成了特有的宏观偏析,这种偏析特征与流体流动规律,溶质密度密切相关。
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| 关 键 词： | 机械搅拌 铸锭组织 宏观偏析 |
Effect of Mechanical Stirring on the Structure and Macrosegregation of Al and Al-Cu Alloys |
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| Liu Xiang,H .Fredrikcsson and G.Engstrom. Effect of Mechanical Stirring on the Structure and Macrosegregation of Al and Al-Cu Alloys[J]. Journal of Northeastern University(Natural Science), 1986, 0(1) |
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| Authors: | Liu Xiang H .Fredrikcsson G.Engstrom |
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| Abstract: | The effect of mechanical stirring on ingots of aluminium and aluminium-copper alloys was studied. The studies deal with the width of the columnar zone and the changes of the primary and secondary dendrite arms space. Deflection of the columnar crystals was also studied.The velocity field of mechanical stirring was calculated and the effects of some factors on the structure and the macrosegregation of ingots were analyzed. |
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| Keywords: | mechanical stirring structure of ingots marosegregation |
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