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Amorphization by dislocation accumulation in shear bands
文献类型：期刊论文
| 作者 | Z. J. Lin ; M. J. Zhuo ; Z. Q. Sun ; P. Veyssiere ; Y. C. Zhou |
| 刊名 | Acta Materialia
 |
| 出版日期 | 2009 |
| 卷号 | 57期号:9页码:2851-2857 |
| 关键词 | Dislocation Shear bands TEM Ceramics transmission electron-microscopy planar deformation features plastic-deformation silicon-nitride nanostructured materials mechanical-properties glass transformation metallic materials shocked quartz crystal |
| ISSN号 | 1359-6454 |
| 中文摘要 | Microcrystalline gamma-Y(2)Si(2)O(7) was indented at room temperature and the deformation microstructure was investigated by transmission electron microscopy in the vicinity of the indent. The volume directly beneath the indent comprises nanometer-sized grains delimited by an amorphous phase while dislocations dominate in the periphery either as dense slip bands in the border of the indent or, further away, as individual dislocations. The amorphous layers and the slip bands are a few nanometers thick. They lie along well-defined crystallographic planes. The microstructural organization is consistent with a stress-induced amorphization process whereby, under severe mechanical conditions, the crystal to amorphous transformation is mediated by slip bands containing a high density of dislocations. It is suggested that the damage tolerance of gamma-Y(2)Si(2)O(7), which is exceptional for a ceramic material, benefits from this transformation. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/32061]  |
| 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. J. Lin,M. J. Zhuo,Z. Q. Sun,et al. Amorphization by dislocation accumulation in shear bands[J]. Acta Materialia,2009,57(9):2851-2857. |
| APA | Z. J. Lin,M. J. Zhuo,Z. Q. Sun,P. Veyssiere,&Y. C. Zhou.(2009).Amorphization by dislocation accumulation in shear bands.Acta Materialia,57(9),2851-2857. |
| MLA | Z. J. Lin,et al."Amorphization by dislocation accumulation in shear bands".Acta Materialia 57.9(2009):2851-2857. |
入库方式： OAI收割
来源：金属研究所
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