Observation and analysis of defect cluster production and interactions with dislocations

S. J. Zinkle, Y. Matsukawa

研究成果: Conference article査読

152 被引用数 (Scopus)

抄録

The current understanding of defect production fundamentals in neutron-irradiated face centered cubic (FCC) and body centered cubic (BCC) metals is briefly reviewed, based primarily on transmission electron microscope observations. Experimental procedures developed by Michio Kiritani and colleagues have been applied to quantify defect cluster size, density, and nature. Differences in defect accumulation behavior of irradiated BCC and FCC metals are discussed. Depending on the defect cluster obstacle strength, either the dispersed barrier hardening model or the Friedel-Kroupa-Hirsch weak barrier model can be used to describe major aspects of radiation hardening. Irradiation at low temperature can cause a change in deformation mode from dislocation cell formation at low doses to twinning or dislocation channeling at higher doses. The detailed interaction between dislocations and defect clusters helps determine the dominant deformation mode. Recent observations of the microstructure created by plastic deformation of quenched and irradiated metals are summarized, including in situ deformation results. Examples of annihilation of stacking fault tetrahedra by gliding dislocations and subsequent formation of mobile superjogs are shown.

本文言語English
ページ(範囲)88-96
ページ数9
ジャーナルJournal of Nuclear Materials
329-333
1-3 PART A
DOI
出版ステータスPublished - 2004 8 1
イベントProceedings of the 11th Conference on Fusion Research - Kyoto, Japan
継続期間: 2003 12 72003 12 12

ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Materials Science(all)
  • Nuclear Energy and Engineering

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