alpha- to gamma-Al(2)O(3) martensitic transformation induced by pulsed laser irradiation
文献类型：期刊论文
| 作者 | P. F. Yan ; K. Du ; M. L. Sui |
| 刊名 | Acta Materialia
 |
| 出版日期 | 2010 |
| 卷号 | 58期号:11页码:3867-3876 |
| 关键词 | Martensitic phase transformation Ceramics High-resolution electron microscopy Twinning Alumina sapphire alpha-al2o3 phase-transformation basal slip epsilon transformation single-crystals gamma-alumina gan growth films dislocations |
| ISSN号 | 1359-6454 |
| 中文摘要 | A martensitic transformation from the a to the gamma phase of aluminum oxide was observed by transmission electron microscopy (TEM) upon rapid heating induced by pulsed laser irradiation. Two variants possessing a twin relationship were found in the product. High-resolution TEM reveals that the transformation is achieved via the glide of quarter partial dislocations on every other basal plane of alpha-Al(2)O(3). The high thermal stress caused by pulsed laser irradiation is believed to be the main driving force of the phase transformation. This martensitic transformation is associated with a positive volume change and substantial shear strain. The overall shear strain could be minimized by the self-accommodating variants. These characteristics suggest potential application of the martensitic transformation for transformation toughening in ceramic materials. (C) 2010 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/321006/31622]  |
| 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 | P. F. Yan,K. Du,M. L. Sui. alpha- to gamma-Al(2)O(3) martensitic transformation induced by pulsed laser irradiation[J]. Acta Materialia,2010,58(11):3867-3876. |
| APA | P. F. Yan,K. Du,&M. L. Sui.(2010).alpha- to gamma-Al(2)O(3) martensitic transformation induced by pulsed laser irradiation.Acta Materialia,58(11),3867-3876. |
| MLA | P. F. Yan,et al."alpha- to gamma-Al(2)O(3) martensitic transformation induced by pulsed laser irradiation".Acta Materialia 58.11(2010):3867-3876. |
入库方式： OAI收割
来源：金属研究所
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