Deformation and fracture mechanisms of Al2O3/Nb/Al2O3 composites under compression
文献类型：期刊论文
| 作者 | Z. F. Zhang ; D. Brunner ; C. Scheu ; M. Ruhle |
| 刊名 | Zeitschrift Fur Metallkunde
 |
| 出版日期 | 2005 |
| 卷号 | 96期号:1页码:62-70 |
| 关键词 | Al2O3/Nb/Al2O3 composites compression interfaces split fracture doped nb-al2o3 bicrystals metallic-glass interface sapphire strength niobium alumina growth temperatures initiation |
| ISSN号 | 0044-3093 |
| 中文摘要 | The deformation and fracture behavior of polycrystalline Al2O3 and Al2O3/Nb/Al2O3 composites with perpendicular and inclined interfaces were investigated at room temperature by means of compression tests. It was found that polycrystalline Al2O3 fractured at higher stresses (>500 MPa) than Al2O3/Nb/Al2O3 composites, and that its failure always showed a split fracture mode. For the Al2O3/Nb/ Al2O3 specimens with interfaces perpendicular to the loading direction, cracks normally nucleated near the Nb/ Al2O3 interfaces and then propagated along the loading direction, finally leading to a split fracture in the polycrystalline Al2O3 parts. For the Al2O3/Nb/Al203 specimens with interfaces inclined to the loading direction, the split fracture of the polycrystailine Al2O3 parts strongly depends on the orientation of the Al2O3/Nb interfaces with respect to the loading direction. For all the Al2O3/Nb/Al2O3 specimens, intergranular cracking was seldom observed independent whether the interfaces are perpendicular or inclined to the loading direction. Based on these results, the fracture mechanisms of Al2O3 and Al2O3/Nb/Al2O3 specimens are discussed. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/35248]  |
| 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. F. Zhang,D. Brunner,C. Scheu,et al. Deformation and fracture mechanisms of Al2O3/Nb/Al2O3 composites under compression[J]. Zeitschrift Fur Metallkunde,2005,96(1):62-70. |
| APA | Z. F. Zhang,D. Brunner,C. Scheu,&M. Ruhle.(2005).Deformation and fracture mechanisms of Al2O3/Nb/Al2O3 composites under compression.Zeitschrift Fur Metallkunde,96(1),62-70. |
| MLA | Z. F. Zhang,et al."Deformation and fracture mechanisms of Al2O3/Nb/Al2O3 composites under compression".Zeitschrift Fur Metallkunde 96.1(2005):62-70. |
入库方式： OAI收割
来源：金属研究所
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