| 凝固条件和镁对Al-Si11.0合金组织的影响 |
| |
| 引用本文： | 徐才录,H.M.Tensi,R.Roesch. 凝固条件和镁对Al-Si11.0合金组织的影响[J]. 材料工程, 1999, 0(1): 3-6 |
| |
| 作者姓名： | 徐才录 H.M.Tensi R.Roesch |
| |
| 作者单位： | 1. 清华大学机械工程系
2. 慕尼黑工业大学,德国 |
| |
| 摘 要： | 研究了宇向凝固时冷却条件和镁元素对Ａｌ－Ｓｉ１１．０合金树枝晶结构和共晶组织的影响。试验结果表明，随着冷却速度的增加，Ａｌ－Ａｉ１１．０合一次枝晶和二镒分枝间距都显著减小，在较小的冷却速度时，加入镁元素后合金的二镒分枝间距明显增大，而在冷却速度大于１６０Ｋ／ｍｉｎ时，则没有影响。试验还发现，加入镁元素后，冷却速度对共晶成分的影响显示减小，是合 共晶组织变细。在试验范围内，Ａｌ－Ｓｉ１１．０合金中加
|
| 关 键 词： | 铝合金 定向凝固 显微组织 |
| 修稿时间： | 1998-01-27 |
Effect of the Cooling Conditions and Mg Content on the Microstructures of Al-Si11.0 Alloy |
| |
| Xu Cailu,H.M.Tensi,R.Roesch. Effect of the Cooling Conditions and Mg Content on the Microstructures of Al-Si11.0 Alloy[J]. Journal of Materials Engineering, 1999, 0(1): 3-6 |
| |
| Authors: | Xu Cailu H.M.Tensi R.Roesch |
| |
| Abstract: | Effect of cooling conditions and Mg on the dendritic,eutectic structures of Al Si11 0 alloy by unidirectional solidification was investigated.The results show that with increase of the cooling rate the first dendritic spacings and second dendritic arm spacings are evidently decreased;Mg addition raises the dendritic arm spacing considerably at the low cooling rate (<160K/min),while it has no significant influence on dendritic arm spacings at high cooling rate.Enhancement of the cooling rate fines the eutectic structure of Al Si11 0 alloy.In all experimented cooling conditions the alloy with the addition of 0 15% Mg possesses the coarsest eutectic structure,while the alloy with the 0 3% Mg addition the finest structure in eutectics. |
| |
| Keywords: | aluninium unidirectional solidification microstructure |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
