| CONDENSED MATTER: STRUCTURE, MECHANICAL AND THERMAL PROPERTIES |
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Effects of Helium Implantation and Subsequent Electron Irradiation on Microstructures of Fe-11wt.% Cr Model Alloy |
| Bing-Sheng Li1,2**, Zhi-Guang Wang2, Tie-Long Shen2, Kong-Fang Wei2, Yan-Bin Sheng2, Tamakai Shibayama3, Xi-Rui Lu4, An-Li Xiong4 |
1State Key Laboratory for Environment-Friendly Energy Materials, Southwest University of Science and Technology, Mianyang 621010
2Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000
3Center for Advanced Research of Energy and Materials, Faculty of Engineering, Hokkaido University, Sapporo 060-8628, Japan
4School of National Defense Science and Technology, Southwest University of Science and Technology, Mianyang 621010
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| Cite this article: |
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Bing-Sheng Li, Zhi-Guang Wang, Tie-Long Shen et al 2019 Chin. Phys. Lett. 36 046104 |
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Abstract Helium effects on dislocation and cavity formation of Fe-11 wt.% Cr model alloy are investigated. Single-beam (electron) and dual-beam (He$^{+}$/e$^{-}$) irradiations are performed at 350$^\circ\!$C and 400$^\circ\!$C using an ultra-high voltage electron microscope combined with ion accelerators. In-situ observation shows that the growth rate of dislocation loops is reduced in the helium pre-injected specimen. The mean size of cavities decreased in the helium pre-injected specimen. The possible mechanisms are discussed.
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Received: 01 January 2019
Published: 23 March 2019
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| Fund: Supported by the National Natural Science Foundation of China under Grant Nos U1832133, 11475229 and 91426301. |
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