Tensile and Charpy impact properties of irradiated reduced-activation ferritic steels

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Tensile tests were conducted on 8 reduced-activation Cr-W steels after irradiation to 15-17 and 26-29 dpa, and Charpy impact tests were conducted on steels irradiated to 26-29 dpa. Irradiation was in Fast Flux Test Facility at 365 C on steels containing 2.25-12% Cr, varying amounts of W, V, and Ta, and 0.1%C. Previously, tensile specimens were irradiated to 6-8 dpa and Charpy specimens to 6-8, 15- 17, and 20-24 dpa. Tensile and Charpy specimens were also thermally aged to 20,000 h at 365 C. Thermal aging had little effect on tensile properties or ductile-brittle transition temperature (DBTT), but several steels ... continued below

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Klueh, R.L. & Alexander, D.J. October 1, 1996.

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Tensile tests were conducted on 8 reduced-activation Cr-W steels after irradiation to 15-17 and 26-29 dpa, and Charpy impact tests were conducted on steels irradiated to 26-29 dpa. Irradiation was in Fast Flux Test Facility at 365 C on steels containing 2.25-12% Cr, varying amounts of W, V, and Ta, and 0.1%C. Previously, tensile specimens were irradiated to 6-8 dpa and Charpy specimens to 6-8, 15- 17, and 20-24 dpa. Tensile and Charpy specimens were also thermally aged to 20,000 h at 365 C. Thermal aging had little effect on tensile properties or ductile-brittle transition temperature (DBTT), but several steels showed a slight increase in upper-shelf energy (USE). After 7 dpa, strength increased (hardened) and then remained relatively unchanged through 26-29 dpa (ie, strength saturated with fluence). Post-irradiation Charpy impact tests after 26-29 dpa showed that the loss of impact toughness (increased DBTT, decreased USE) remained relatively unchanged from the values after 20-24 dpa, which had been relatively unchanged from the earlier irradiations. As before, the two 9Cr steels had the most irradiation resistance.

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20 p.

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INIS; OSTI as DE97000143

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  • 18. symposium on effects of radiation on materials, Hyannis, MA (United States), 25-27 Jun 1996

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  • Other: DE97000143
  • Report No.: CONF-960643--1
  • Grant Number: AC05-96OR22464
  • Office of Scientific & Technical Information Report Number: 394644
  • Archival Resource Key: ark:/67531/metadc681635

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  • October 1, 1996

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  • July 25, 2015, 2:20 a.m.

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  • Jan. 21, 2016, 12:59 p.m.

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Klueh, R.L. & Alexander, D.J. Tensile and Charpy impact properties of irradiated reduced-activation ferritic steels, article, October 1, 1996; Tennessee. (digital.library.unt.edu/ark:/67531/metadc681635/: accessed September 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.