Anisotropic deformation and damage behavior of brittle-ductile laminated composites in bending at high temperature
文献类型：期刊论文
| 作者 | Y. W. Bao ; Y. C. Zhou |
| 刊名 | Journal of Composite Materials
 |
| 出版日期 | 2005 |
| 卷号 | 39期号:2页码:147-162 |
| 关键词 | Al2O3-Ti3SiC2 laminated composites anisotropic stiffness subcritical crack growth creep damage siliconized silicon-carbide ceramics creep fracture ti3sic2 alumina propagation cavitation recovery coarse |
| ISSN号 | 0021-9983 |
| 中文摘要 | Brittle-ductile alternate laminates with strong interfaces, Al2O3-Ti3SiC2 multilayer composites, are fabricated by hot-pressing thin Al2O3 tapes coated with a mixture of titanium, silicon, and graphite powders at 1550degreesC. The damage evolution and subcritical growth of macrocracks in these novel composites are investigated by three-point bending tests at high temperatures. By comparing the mechanical response in different loading directions, the anisotropic mechanical properties of the laminated beams are revealed. The experimental results show that, with the stress redistribution and the neutral axis shift toward the compressive surface during the creep damage, increased cracks occur in the Al2O3 layers and slowly extend toward the neutral axis without brittle fracture. It is demonstrated that the creep damage of the Al2O3-Ti3SiC2-laminated composites in bending is governed by a combination of stress relaxation in Ti3SiC2 layers and subcritical crack growth in Al2O3 layers. This result implies that controllable subcritical crack growth and crack arrest in brittle ceramics could be accomplished by means of a ductile-brittle joined structure. This prediction is confirmed by using a bending test on an aluminum beam with a glass coating bonded on the side surface. |
| 原文出处 | |
| 公开日期 | 2012-04-14 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/34794]  |
| 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 | Y. W. Bao,Y. C. Zhou. Anisotropic deformation and damage behavior of brittle-ductile laminated composites in bending at high temperature[J]. Journal of Composite Materials,2005,39(2):147-162. |
| APA | Y. W. Bao,&Y. C. Zhou.(2005).Anisotropic deformation and damage behavior of brittle-ductile laminated composites in bending at high temperature.Journal of Composite Materials,39(2),147-162. |
| MLA | Y. W. Bao,et al."Anisotropic deformation and damage behavior of brittle-ductile laminated composites in bending at high temperature".Journal of Composite Materials 39.2(2005):147-162. |
入库方式： OAI收割
来源：金属研究所
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