High-resolution electron microscope observation of interface microstructure of a cast Al-Mg-Si-Bi-Pb(6262)/Al2O3p composite
文献类型：期刊论文
| 作者 | Z. Zhou ; Z. Fan ; H. X. Peng ; D. X. Li |
| 刊名 | Journal of Microscopy-Oxford
 |
| 出版日期 | 2001 |
| 卷号 | 201页码:144-152 |
| 关键词 | Al-Mg-Si-Bi-Pb alpha alumina beta alumina composite HREM interface metal-matrix composites aluminum-magnesium alloys piston alloy fiber fabrication particulate spinel al2o3 infiltration preforms |
| ISSN号 | 0022-2720 |
| 中文摘要 | High-resolution electron microscopy was employed to characterize the interface structure of a cast Al-Mg-Si-Bi-Pb aluminium(6262)-based composite reinforced by cr alumina particles with a trace of beta alumina in order to investigate the behaviour of alloying elements in cast composites, Except for a few primary Mg2Si particles, few reaction products were detected at the interface of Al/alpha -Al2O3 due to the unfavourable reaction kinetics during the squeeze-casting process. The Mg2Si particle has an orientation relationship with alpha -Al2O3 of [011](Mg2Si)//[1 (2) over bar 10](alpha -Al2O3) (1 (1) over bar1)(Mg2Si)//(0006)(alpha -Al2O3). A significant amount of MgAl2O4 was found on the surface of the beta -Al2O3 particles, which is in contrast to the small degree of reaction found on alpha -Al2O3 particles, MgAl2O4 and beta -Al2O3 particles have the following orientation relationship: [011](MgA12O4)//[1 (2) over bar 10](beta -Al2O3) (1 (1) over bar1) (MgAl2O4)//(0006)(beta -Al2O3). The similar crystal structure of beta -Al2O3 to MgAl2O4 favours MgAl2O4 nucleation and growth on the surface of beta -Al2O3. Interfacial energy minimization dominates the atomic structure of the interface with the result that close packed planes and directions in the Al2O3 reinforcement and reaction products are parallel to the interfaces. Bi and Pb were found in the form of metallic nanometre particles between Al2O3 particles, or between the MgAl2O4 and Al2O3 particles, or in the open channels of beta -Al2O3 filled by the Al matrix. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/36963]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | Z. Zhou,Z. Fan,H. X. Peng,et al. High-resolution electron microscope observation of interface microstructure of a cast Al-Mg-Si-Bi-Pb(6262)/Al2O3p composite[J]. Journal of Microscopy-Oxford,2001,201:144-152. |
| APA | Z. Zhou,Z. Fan,H. X. Peng,&D. X. Li.(2001).High-resolution electron microscope observation of interface microstructure of a cast Al-Mg-Si-Bi-Pb(6262)/Al2O3p composite.Journal of Microscopy-Oxford,201,144-152. |
| MLA | Z. Zhou,et al."High-resolution electron microscope observation of interface microstructure of a cast Al-Mg-Si-Bi-Pb(6262)/Al2O3p composite".Journal of Microscopy-Oxford 201(2001):144-152. |
入库方式： OAI收割
来源：金属研究所
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