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Title: Understanding Creep Mechanisms in Graphite with Experiments, Multiscale Simulations, and Modeling

Disordering mechanisms in graphite have a long history with conflicting viewpoints. Using Raman and x-ray photon spectroscopy, electron microscopy, x-ray diffraction experiments and atomistic modeling and simulations, the current project has developed a fundamental understanding of early-to-late state radiation damage mechanisms in nuclear reactor grade graphite (NBG-18 and PCEA). We show that the topological defects in graphite play an important role under neutron and ion irradiation.
 [1] ;  [1] ;  [2]
  1. North Carolina State Univ., Raleigh, NC (United States)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
OSTI Identifier:
Report Number(s):
09-796; TRN: US1500031
DOE Contract Number:
Resource Type:
Technical Report
Research Org:
North Carolina State Univ., Raleigh, NC (United States); Oak Ridge National Lab. (ORNL), TN (United States)
Sponsoring Org:
USDOE Office of Nuclear Energy (NE), Nuclear Energy University Programs (NEUP)
Country of Publication:
United States
36 MATERIALS SCIENCE; GRAPHITE; Computerized Simulation; NEUTRONS; X-RAY DIFFRACTION; CREEP; ELECTRON MICROSCOPY; Physical Radiation Effects; CURRENTS; Crystal Defects; IRRADIATION; REACTORS; Raman Spectroscopy; X-Ray Spectroscopy; Electron Microscopy