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Dislocation Loop Formation and Growth under In Situ Laser and/or Electron Irradiation
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| Title: | Dislocation Loop Formation and Growth under In Situ Laser and/or Electron Irradiation |
| Authors: | Yang, Zhanbing Browse this author | | Sakaguchi, Norihito Browse this author | | Watanabe, Seiichi Browse this author | | Kawai, Masayoshi Browse this author |
| Keywords: | Applied physics | | Modelling and theory | | Materials physics | | Nuclear physics |
| Issue Date: | 12-Dec-2011 |
| Publisher: | Nature Publishing Group |
| Journal Title: | Scientific Reports |
| Volume: | 1 |
| Start Page: | 190 |
| Publisher DOI: | 10.1038/srep00190 |
| Abstract: | Vacancies and interstitial atoms are primary lattice (point) defects that cause observable microstructural changes, such as the formation of dislocation loops and voids in crystalline solids. These defects’ diffusion properties determine the phase stability and environmental resistibility of macroscopic materials under ambient conditions. Although in situ methods have been proposed for measuring the diffusion energy of point defects, directmeasurement has been limited. In this study, we propose an alternative in situ method to measure the activation energy for vacancymigration under laser irradiation using a pulsed laser beamfroma laser-equipped high-voltage electron microscope (laser-HVEM).We made in situ observations that revealed the formation and growth of vacancy dislocation loops in an austenitic stainless steel during laser irradiation. These loops continued to grow when thermal annealing was performed after laser irradiation at the same temperature. We anticipate that laser-HVEM will provide a new method for investigating lattice defects. |
| Rights: | http://creativecommons.org/licenses/by-nc-nd/3.0/ |
| Type: | article |
| URI: | http://hdl.handle.net/2115/47675 |
| Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 渡辺 精一
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