Iodine stress-corrosion cracking in irradiated Zircaloy cladding. [PWR; BWR]

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Irradiated Zircaloy cladding specimens, which had experienced fluences from 0.1 to 6 x 10/sup 21/ n/cm/sup 2/ (E>0.1 MeV), were gas-pressure tested in an iodine environment to investigate their stress-corrosion cracking (SCC) susceptibility. The test temperatures and hoop stresses ranged from 320 to 360/sup 0/C and 150 to 500 MPa, respectively. The results indicate that irradiation, in general, increases the susceptibility of Zircaloy to iodine SCC. For specimens that experienced fluences >2 x 10/sup 21/ n/cm/sup 2/ (E>0.1 MeV), the 24-h failure stress was 177+-18 MPa, regardless of the preirradiation metallurgical condition. An analytical model for iodine SCC has been ... continued below

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Pages: 15

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Mattas, R.F.; Yaggee, F.L. & Neimark, L.A. January 1, 1979.

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Irradiated Zircaloy cladding specimens, which had experienced fluences from 0.1 to 6 x 10/sup 21/ n/cm/sup 2/ (E>0.1 MeV), were gas-pressure tested in an iodine environment to investigate their stress-corrosion cracking (SCC) susceptibility. The test temperatures and hoop stresses ranged from 320 to 360/sup 0/C and 150 to 500 MPa, respectively. The results indicate that irradiation, in general, increases the susceptibility of Zircaloy to iodine SCC. For specimens that experienced fluences >2 x 10/sup 21/ n/cm/sup 2/ (E>0.1 MeV), the 24-h failure stress was 177+-18 MPa, regardless of the preirradiation metallurgical condition. An analytical model for iodine SCC has been developed which agrees reasonably well with the test results.

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Pages: 15

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Dep. NTIS, PC A02/MF A01.

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  • ANS topical meeting on light water reactor fuel performance, Portland, OR, USA, 29 Apr 1979

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  • Report No.: CONF-790441-7
  • Grant Number: W-31-109-ENG-38
  • Office of Scientific & Technical Information Report Number: 6019532
  • Archival Resource Key: ark:/67531/metadc1098885

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Office of Scientific & Technical Information Technical Reports

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  • January 1, 1979

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  • Feb. 18, 2018, 3:59 p.m.

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  • April 18, 2018, 11:25 a.m.

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Mattas, R.F.; Yaggee, F.L. & Neimark, L.A. Iodine stress-corrosion cracking in irradiated Zircaloy cladding. [PWR; BWR], article, January 1, 1979; Illinois. (digital.library.unt.edu/ark:/67531/metadc1098885/: accessed October 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.