Paper Title:
Effect of He-Injection on Irradiation Damage of High Mn-Cr Steel
  Abstract

The high Mn-Cr austenitic steel for structure material of nuclear and/or fusion reactors from the point of view of the reduced radio-activation has been irradiated by using three irradiation modes of electron-beam irradiation, electron-beam irradiation after He-injection and electron/He+-ion dual-beam irradiation in 1250kV high voltage electron microscope (HVEM) connected with an ion accelerators to study the effect of He-injection on irradiation damage. Irradiation-induced segregation analyses were carried out by an energy dispersive X-ray analyzer (EDX) in a 200kV FE-TEM with beam diameter of about 0.5nm. Void formation was not observed in each irradiation condition. Grain boundary migration was observed in the case of electron/He+-ion dual-beam irradiation. Irradiation-induced segregations of Cr and Mn at grain boundary were observed in each irradiation condition. The amounts of Cr and Mn segregation decreased in the cases of electron-beam irradiation after He-injection compared with other irradiation conditions.

  Info
Periodical
Materials Science Forum (Volumes 475-479)
Main Theme
Edited by
Z.Y. Zhong, H. Saka, T.H. Kim, E.A. Holm, Y.F. Han and X.S. Xie
Pages
1425-1428
DOI
10.4028/www.scientific.net/MSF.475-479.1425
Citation
D. S. Bae, S. L. Lee, S. H. Nahm, J.W. Choi, H. Takahashi, "Effect of He-Injection on Irradiation Damage of High Mn-Cr Steel", Materials Science Forum, Vols. 475-479, pp. 1425-1428, 2005
Online since
January 2005
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