对Al-Bi基难混溶合金开展了快速定向凝固实验研究，通过添加第三组元的方法，揭示了Si和Cu元素及其它们的含量对Al-Bi合金凝固组织的影响。研究结果表明，添加Si 或Cu均使凝固组织中的富Bi粒子尺寸增大；相同的实验条件下，元素Si比Cu更易使富Bi相粗化。分析了第三组元对二元合金体系的自由能、两液相间界面能和液相粘度的改变及其对合金凝固过程的影响，加深了对三元难混溶合金凝固特征的认识。
The directional solidification experiment has been carried out for the Al-Bi based immiscible alloys. The effect of the addition element Si or Cu and the content on the solidification microstructure was investigated. The results show that both Si and Cu accelerate the coarsening of the Bi-rich sphere, and the addition of Si is more obvious than the element Cu to do under the same experimental condition. The change of the free energy, liquid-liquid interfacial energy and liquid viscosity due to the addition has been analyzed. Also, the effect of the change on the solidification process was discussed in detail. This investigation will enrich the understanding of the solidification feature of the ternary immiscible alloys.
参考文献
| [1] | |
| [2] | |
| [3] | |
| [4] | |
| [5] | |
| [6] | |
| [7] | |
| [8] | |
| [9] | |
| [10] | |
| [11] | |
| [12] | |
| [13] |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%