| 雾化工艺对Al-Si合金液滴凝固组织的影响 |
| |
| 引用本文： | 刘申全,梁红玉,毛协民.雾化工艺对Al-Si合金液滴凝固组织的影响[J].特种铸造及有色合金,2010,30(1). |
| |
| 作者姓名： | 刘申全 梁红玉 毛协民 |
| |
| 作者单位： | 1. 太原工业学院机械工程系
2. 上海大学材料科学与工程学院 |
| |
| 摘 要： | 将雾化合金液滴的传热与运动方程相耦合,对合金的冷却过程进行研究,探讨液滴尺寸、气体初始速度、熔体过热度等参数对合金冷却过程及粉末微观组织的影响,并结合A390合金进行了计算。结果表明,随着液滴尺寸减小,所获得的冷却速度及过冷度增大;当液滴尺寸足够小时,液滴温度的变化趋势及合金液滴的组织将发生突变;增加雾化气体的初始速度,降低熔体过热度,可以抑制初生相的析出,有利于细化合金的组织。
|
| 关 键 词： | 雾化液滴 凝固 临界尺寸 亚稳结构 |
Effects of Atomization Processing Parameters on Microstructure of Atomized Al-Si Alloy Droplets |
| |
| Liu Shenquan,Liang Hongyu,Mao Xiemin.Effects of Atomization Processing Parameters on Microstructure of Atomized Al-Si Alloy Droplets[J].Special Casting & Nonferrous Alloys,2010,30(1). |
| |
| Authors: | Liu Shenquan Liang Hongyu Mao Xiemin |
| |
| Affiliation: | Liu Shenquan1,Liang Hongyu1,Mao Xiemin2 quan1,Mao Xiemin2(1.Department of Mechanical Engineering,Taiyuan Institute of Technology,Taiyuan,China,2.School of Material Science , Engineering,Shanghai University,Shanghai,China) |
| |
| Abstract: | The cooling process of the Al-Si alloy were analyzed by a model,in which the heat transfer equation of atomized alloy droplets coupling with motion equation was considered,to understand effects of droplet size,initial gas velocity,super-heat of the melt on cooling process and microstructure of the A390 alloy.It is found that,with decreasing in size of droplet,the obtained cooling rate and under-cooled rate are raised.When the droplet size is decreased to below a critical size,temperature change and microstr... |
| |
| Keywords: | Atomized Droplets Solidification Critical Size Metastable Structure |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
