本文介绍了合金凝固传输过程中的二相流数学模型．该模型描述了固－液界面的传输现象和液相对流对宏观偏析的影响，并考虑了生核过程，热和溶质的过冷效应，及固相颗粒的宏观运动，从而把宏观传输过程和微观结构结合起来．采用该模型，对Ａｌ－４％Ｃｕ等轴晶合金的凝固进行了完整的数值模拟．
A two-phase model of the transport phenomena during solidification of alloys is presented that describes The effect of solid transport and liquid convection on macro-segregation and grain structure evolution.The model considers nucleation, thermal and solutal undercooling, and the macro-movement of solid grains, thus combining macro-transport phenomena with the microstructure of the solid.The two-phase model was used in a numerical simulation of solidification of Al-4%Cu equiaxed alloy and representative results are presented.
参考文献
| [1] | |
| [2] | |
| [3] | |
| [4] | |
| [5] | |
| [6] | |
| [7] | |
| [8] | |
| [9] | |
| [10] | |
| [11] | |
| [12] | |
| [13] | FlemingsMC,MehrabianR,NereoGE．TMS-AIME,1968:242:412FlemingsMC,NereoGE．TMS-AIME,1968 |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%