|
|||||
|
|
| Si，La对Al-4．5Cu合金准固态凝固行为的影响 | |
| 引用本文： | 董晟全,刘江南,周敬恩,严文,梁艳峰,李建平,杨通.Si，La对Al-4．5Cu合金准固态凝固行为的影响[J].稀有金属材料与工程,2004,33(3):285-288. |
| 作者姓名： | 董晟全 刘江南 周敬恩 严文 梁艳峰 李建平 杨通 |
| 作者单位： | 1. 西安交通大学,陕西,西安,710048;西安工业学院,陕西,西安,710032 2. 西安工业学院,陕西,西安,710032 3. 西安交通大学,陕西,西安,710048 |
| 摘 要： | 通过对合金的收缩应变和热裂抗力及准固态拉伸行为进行测试，研究了合金元素(Si，La)对Al-4．5Cu合金凝固行为的影响。结果表明，Si，La能使Al-4．5Cu的热裂倾向性降低；加入2％Si使合金的再辉现象非常严重，导致合金不可能有很高的强度而很快断裂：与其它Al-4．5Cu-Si合金相比，Al4．5Cu3Si合金具有很强的补缩能力，断裂应力值最高：La的加入能缩小二次枝晶间距，明显提高合金的抗热裂性能。 |
| 关 键 词： | Al-4.5Cu合金 准固态凝固行为 抗热裂力 收缩应变 Si La 断裂应力 |
| 文章编号： | 1002-185X(2004)03-0285-04 |
| 修稿时间： | 2002年5月31日 |
Effect of Si and La on the Quasi-Solid Solidification Behavior of Al-4.5Cu Alloy |
|
| Dong Shengquan,Liu Jiangnan,Zhou Jingen,Yan Wen,Liang Yanfeng,Li Jianping,Yang Tong.Effect of Si and La on the Quasi-Solid Solidification Behavior of Al-4.5Cu Alloy[J].Rare Metal Materials and Engineering,2004,33(3):285-288. | |
| Authors: | Dong Shengquan Liu Jiangnan Zhou Jingen Yan Wen Liang Yanfeng Li Jianping Yang Tong |
| Abstract: | The effect of alloy elements on the quasi-solid solidification behavior of Al-4.5Cu alloy has been studied. The results indicate that Si and La can reduce the hot cracking tendency of Al-4.5Cu; adding 2%Si to matrix, the releasement of crystallization enthalpies makes the recalescence very severe, so the alloy cracks and cant have high strength; Al4.5Cu3Si has a strong ability of compensation and its fracture stress is highest among the Al-Cu-Si alloys; adding of La can reduce the secondary dendrite arm spacing, and the hot cracking properties are improved obviously. |
| Keywords: | casting Al-4 5Cu alloy quasi-solid solidification behavior hot crack resisting properties |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |
| 点击此处可从《稀有金属材料与工程》浏览原始摘要信息 | |
| 点击此处可从《稀有金属材料与工程》下载全文 | |