English, Article edition: IRRADIATION EFFECTS ON MICROSTRUCTURE AND TENSILE BEHAVIOR OF POLYCRYSTALLINE NICKEL I. M. GHAURI; NAVEED AFZAL; M. AKRAM RAZA

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Bookmark: http://trove.nla.gov.au/version/84241
Physical Description
  • article
Language
  • English

Edition details

Title
  • IRRADIATION EFFECTS ON MICROSTRUCTURE AND TENSILE BEHAVIOR OF POLYCRYSTALLINE NICKEL
Author
  • I. M. GHAURI
  • NAVEED AFZAL
  • M. AKRAM RAZA
Physical Description
  • article
Notes
  • The microstructural modifications due to high energy electrons (8â18 MeV) and their correlation with the yielding behavior of polycrystalline nickel have been investigated. The specimens in the form of strips were irradiated at room temperature for 15 min in the energy range 8â18 MeV using linear accelerator. The comparison of microstructural results of irradiated specimens with that of the un-irradiated ones reveals that radiation deteriorate the surface of the target specimens. The damage was found to be more prominent at the grain boundaries. The tensile tests of both unirradiated and irradiated samples were carried out using Universal Testing Machine at room temperature. An increase in yield stress and loss of ductility was observed in case of irradiated specimens, which became more pronounced with an increase of incident beam energy. These effects are attributed to the interaction of glide dislocations stress fields with the defects produced during irradiation.
  • Irradiation, electron beam, grain boundaries, swelling, yield stress
  • RePEc:wsi:srlxxx:v:14:y:2007:i:06:p:1199-1203
Language
  • English
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