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Productions of transmute elements (hydrogen and helium) have great influences on the resistance to irradiation damage in structural materials for fusion reactor. The evolution of irradiation damage in bcc iron is investigated with ion implantation and electron irradiation. Pure iron implanted by He+ or D+ ions at room temperature are aged at 500℃ for 1 h, then irradiated by electrons under high voltage electron microscope. The results show that interstitial loops (i-loop) and vacancy loops (v-loop) are formed in He+-implanted iron and D+-implanted iron respectively. Under electron irradiation, due to the absorption of interstitials atom, i-loop grows up while v-loop shrinks. According to the rate of variation of dislocation loop, v-loop absorbs more interstitial atoms, i.e., the dislocation bias of D+-implanted iron is larger than that of He+-implanted iron, which means that the v-loop has the more contributions to irradiation swelling than i-loop. The causes of the different natures of dislocation loops formed in D+-implanted iron and He+-implanted iron are analyzed by the structures of He-V and D-V complexes.
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Keywords:
- helium /
- deuterium /
- irradiation damage /
- dislocation loop
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[18] Wolfenden A 1998 Micron 9 211
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[1] Klueh R L, Nelson A T 2007 J. Nucl. Mater. 371 37
[2] Hunn J D, Lee E H, Byun T S, Mansur L K 2000 J. Nucl. Mater. 282 131
[3] Wolfeden A 1976 Micron 7 55
[4] Osetsky Y N, Bacon D J, Serra A, Singh B N, Golubov S I 2000 J. Nucl. Mater. 276 65
[5] Gao Y Z, Sun G R, Zhang T H, Ji C Z, Yang J H 1990 Chin. Phys. Lett. 8 82
[6] Zinkle S J 2004 APS Division of Plasma Physics 46th Annual Meeting Savannah, GA, November 15-19, 2004
[7] Arakawa K, Mori H, Ono K 2002 J. Nucl. Mater. 307-311 272
[8] Huang Y N, Wan F R, Jiao Z J 2011 Acta Phys. Sin. 60 036802 (in Chinese) [黄依娜, 万发荣, 焦志杰 2011 60 036802]
[9] Deo C S, Okuniewski M A, Srivilliputhur S G, Maloy S A, Baskes M I, Michael R J, Stubbins J F 2007 J. Nucl. Mater. 361 141
[10] Stewart D M, Osetsky Y N, Stoller R E, Golubov S I, Seletskai T, Kamenski P J 2010 Philos. Mag. 90 935
[11] Zheng H 2007 Acta. Phys. Sin. 56 389 (in Chinese) [郑晖 2007 56 389]
[12] Chen J, Jung P, Hoffelner W, Ullmaier H 2008 Acta. Mater. 56 250
[13] Alonso E, Caturla M J, Díaz de la Rubia T 2000 J. Nucl. Mater. 276 221
[14] Gary S W 2007 Fundamentas of Radiation Materials Science (Newyork: Springer) p144
[15] Gilbert M R, Yao Z, Kirk M A, Jenkins M L, Dudarev S L 2009 J. Nucl. Mater. 386-388 36
[16] Trinkaus H, Singh B 2003 J. Nucl. Mater. 323 229
[17] Jiao Z J 1998 M. S. Dissertation (Beijing: University of Science and Technology Beijing) (in Chinese) [焦志杰 1998 硕士学位论文(北京: 北京科技大学)]
[18] Wolfenden A 1998 Micron 9 211
[19] Wan F R, Zhu X F, Xiao J M, Yuan Y 1990 Acta Phys. Sin. 39 1093 (in Chinese) [万发荣, 朱晓峰, 肖纪美, 袁逸 1990 39 1093]
[20] Myers S M, Richards P M, Wampler W R 1985 J. Nucl. Mater. 165 9
[21] Yao B, Edwards D J, Kurtz R J, Odette G R, Yamamoto T 2011 Fusion Reactor Materials Program Oak Ridge, US, December 31, 2011 pp85-89
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