Flow Stress of Biomorphous Metal-Matrix Composites
文献类型：期刊论文
| 作者 | Jia BH; Gao HJ; Wang ZQ(王自强)
|
| 刊名 | Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing
 |
| 出版日期 | 2004 |
| 卷号 | 386期号:1-2页码:435-441 |
| 通讯作者邮箱 | hjgao@mf.mpg.de |
| ISSN号 | 0921-5093 |
| 通讯作者 | Gao, HJ (reprint author), Max Planck Inst Met Res, Heisenbergstr 3, D-70569 Stuttgart, Germany. |
| 中文摘要 | For metal-matrix composites (MMCs), interfacial debonding between the ductile matrix and the reinforcing hard inclusions is an important failure mode. A fundamental approach to improving the properties of MMCs is to optimize their microstructure to achieve maximum strength and toughness. Here, we investigate the flow stress of a MMC with a nanoscale microstructure similar to that of bone. Such a 'biomorphous' MMC would be made of staggered hard and slender nanoparticles embedded in a ductile matrix. We show that the large aspect ratio and the nanometer size of inclusions in the biomorphous MMC lead to significantly improved properties with increased tolerance of interfacial damage. In this case, the partially debonded inclusions continue to carry mechanical load transferred via longitudinal shearing of the matrix material between neighboring inclusions. The larger the inclusion aspect ratio, the larger is the flow stress and work hardening rate for the composite. Increasing the volume concentration of inclusion also makes the biomorphous MMC more tolerant of interfacial damage. |
| 学科主题 | 力学 |
| 类目[WOS] | Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| 研究领域[WOS] | Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering |
| 关键词[WOS] | STRAIN GRADIENT PLASTICITY ; AL-SIC COMPOSITES ; REINFORCEMENT FRACTURE ; MECHANICAL-PROPERTIES ; PARTICLE-SIZE ; BIOLOGICAL-MATERIALS ; VOID NUCLEATION ; DUCTILE MATRIX ; ALUMINUM-ALLOY ; DEFORMATION |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000225127800053 |
| 公开日期 | 2007-06-15 ; 2007-12-05 ; 2009-06-23 |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/15879]  |
| 专题 | 力学研究所_力学所知识产出(1956-2008) |
| 推荐引用方式 GB/T 7714 | Jia BH,Gao HJ,Wang ZQ. Flow Stress of Biomorphous Metal-Matrix Composites[J]. Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing,2004,386(1-2):435-441. |
| APA | Jia BH,Gao HJ,&王自强.(2004).Flow Stress of Biomorphous Metal-Matrix Composites.Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing,386(1-2),435-441. |
| MLA | Jia BH,et al."Flow Stress of Biomorphous Metal-Matrix Composites".Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing 386.1-2(2004):435-441. |
入库方式： OAI收割
来源：力学研究所
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