雾化喷射沉积成形中沉积体内的凝固过程(Ⅱ)──Al-Cu合金的计算

基金项目:

国家自然科学基金

详细信息

Analysis of Solidification Behavior in Spray Deposited Preform （Ⅱ）──Calculation Results for Al-Cu Alloy

1. State Key Laboratory for Advanced Metals and Materials, UST Beijing, Beijing 100083, China;
2. Material Science Engineering School, UST Beijing

摘要: 根据已知的喷射沉积成形沉积体内的凝固模型,对典型的Al-Cu合金进行了计算分析.结果表明,工艺参数(如沉积速率和沉积时雾化锥的温度)和材料的热物性(如界面换热系数)对沉积体内的凝固过程有明显影响.在沉积热力学条件(沉积前雾化锥的热力学状态)相同的情况下,沉积表面的温度随工艺参数和材料热物性发生显著变化.
- 喷射沉积成形 /
- 沉积坯件 /
- 凝固分析 /
- Al-Cu合金
Abstract: According to the solidification model in the spray formed preform, the solidification behavior of typical Al-Cu alloy is calculated and discussed. The result shows that processing parameters such as deposition rate and spray temperature at deposition, and material thermal physical properties such as surface heat transfer coefficient have apparent effects on solidification process in preform. Under the same deposition thermodynamic state just before the spray cone depositing on the surface of the preform, temperature of deposition surface varys significantly as the processing parameters and material thermal physical properties change.
- spray forming /
- deposition preform /
- solidification /
- Al-Cu alloy