Stage III dislocation pinning in silver resulting from gamma irradiation

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The objectives of this work were fourfold: (1) to test the validity of the vibrating string dislocation model in silver, (2) to determine in which annealing stage long-range migration first occurs, (3) to measure the migration energy and identify the defect responsible for observed annealing, and (4) to investigate the possibility of dislocation pipe diffusion. Apparatus is described which is capable of continuously measuring changes in the elastic modulus and internal friction during gamma irradiation over the temperature range from less than 4$sup 0$K to well above room temperature. A novel hollow-cylinder sample geometry permits use of a source strength ... continued below

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Pages: 9

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Van Konynenburg, R.A. & Guinan, M.W. September 19, 1975.

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Description

The objectives of this work were fourfold: (1) to test the validity of the vibrating string dislocation model in silver, (2) to determine in which annealing stage long-range migration first occurs, (3) to measure the migration energy and identify the defect responsible for observed annealing, and (4) to investigate the possibility of dislocation pipe diffusion. Apparatus is described which is capable of continuously measuring changes in the elastic modulus and internal friction during gamma irradiation over the temperature range from less than 4$sup 0$K to well above room temperature. A novel hollow-cylinder sample geometry permits use of a source strength of only 1 Ci. Survey experiments over a wide temperature range and isothermal irradiations above room temperature are discussed. The results are explained in terms of the Koehler- Granato-Lucke vibrating string dislocation model and the Thompson-Buck-Huntington- Barnes defect-dislocation interaction model. (auth)

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Pages: 9

Notes

Dep. NTIS

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  • International conference on radiation damage in metals, Gatlinburg, Tennessee, USA, 5 Oct 1975

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  • Report No.: UCRL--77345
  • Report No.: CONF-751006--8
  • Grant Number: None
  • Office of Scientific & Technical Information Report Number: 4179854
  • Archival Resource Key: ark:/67531/metadc867493

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  • September 19, 1975

Added to The UNT Digital Library

  • Sept. 16, 2016, 12:32 a.m.

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  • Oct. 18, 2016, 1:58 p.m.

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Van Konynenburg, R.A. & Guinan, M.W. Stage III dislocation pinning in silver resulting from gamma irradiation, article, September 19, 1975; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc867493/: accessed August 18, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.