本文以Al、Al-Si、Al-Ce高纯组元配置一定质量百分比的Al-Si-Ce合金,采用多功能真空电弧熔炼炉YSU-ZZ进行熔炼,使用铜模吸铸法制备样品并对样品进行金相显微镜、扫描电镜(SEM)及能谱分析(EDS).重点研究了Ce的加入量及冷却速度等因素对共品硅的大小、形状和分布的影响.研究表明快速凝同可以很好的细化共晶硅,冷却速度越快,凝同速度越快,共晶硅就越细小.当Ce的加入量为1%(质量)时,共晶硅由粗大的板片状变为小蠕点状.
参考文献
| [1] | 熊艳才,刘伯操.铸造铝合金现状及未来发展[J].特种铸造及有色合金,1998(04):0. |
| [2] | CHEN Chong,LIU Zhong-xia,REN Bo,WANG Ming-xing,WENG Yong-gang,LIU Zhi-yong.Influences of complex modification of P and RE on microstructure and mechanical properties of hypereutectic Al-20Si alloy[J].中国有色金属学会会刊（英文版）,2007(02):301-306. |
| [3] | Ya Ping;Shujun Wang;Hui Li et al.A new technique to modify hypereutectic Al-24Si alloys by a Si-P master alloy[J].Journal of Alloys and Compounds,2009,477:139-144. |
| [4] | Juan Asensio-Lozano;Beatriz Suarez-Pena .Effect of the Addition of Refiners and/or Modifiers on the Microstructure of Die Cast Al-12Si Alloys[J].Scripta materialia,2006(5):943-947. |
| [5] | C.L.Xu;Q.C.Jiang .Morphologies of primary silicon in hypereutectic Al-Si alloys with melt overheating temperature and cooling rate[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2006(2):451-455. |
| [6] | Jianbo YU,Zhongming REN,Weili REN,Kang DENG,Yunbo ZHONG.Solidification structure of eutectic Al-Si alloy under a high magnetic field-aid-electromagnetic vibration[J].金属学报(英文版),2009(03):191-196. |
| [7] | ZHANG Henghua,DUAN Haili,SHAO Guangjie,XU Luoping,YIN Junlin,YAN Biao.Modification mechanism of cerium on the Al-18Si alloy[J].稀有金属（英文版）,2006(01):11-15. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%