Effect of specimen size and nickel content on the impact properties of 12 Cr-1 MoVW ferritic steel

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The ferritic steel 12 Cr-1 MoVW is a candidate material for use in the first wall of magnetic fusion reactors. One of the primary concerns of materials in this application is service-induced embrittlement from aging and irradiation. Unirradiated Charpy impact data have been developed on three typical heats of 12 Cr-1 MoVW steel and on heats that have been modified with nickel and chromium additions for subsequent simulation of helium effects of irradiation. The ductile-to-brittle transition temperature and the upper-shelf energy were reduced by nickel additions. The addition of nickel while simultaneously maintaining a constant net chromium equivalent caused the ... continued below

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Pages: 6

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Corwin, W.R.; Klueh, R.L. & Vitek, J.M. January 1, 1983.

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Description

The ferritic steel 12 Cr-1 MoVW is a candidate material for use in the first wall of magnetic fusion reactors. One of the primary concerns of materials in this application is service-induced embrittlement from aging and irradiation. Unirradiated Charpy impact data have been developed on three typical heats of 12 Cr-1 MoVW steel and on heats that have been modified with nickel and chromium additions for subsequent simulation of helium effects of irradiation. The ductile-to-brittle transition temperature and the upper-shelf energy were reduced by nickel additions. The addition of nickel while simultaneously maintaining a constant net chromium equivalent caused the transition temperature to increase. The use of a subsize specimen is mandated by the small volume and high gamma heating in high-flux research reactors used for very high-fluence irradiation experiments. Therefore, an understanding of the behavior of the subsize specimen is important in predicting corresponding irradiation-induced transition temperature shifts and upper-shelf drops of full-size Charpy specimens. Data are reported from subsize Charpy impact specimens, and the full- and subsize specimens are compared. The effect of specimen size on the upper-shelf energy of this material can be reduced better by volume normalization than by area normalization.

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Pages: 6

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NTIS, PC A02/MF A01.

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  • 3. topical meeting on fusion reactor materials, Albuquerque, NM, USA, 19 Sep 1983

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  • Other: DE84003270
  • Report No.: CONF-830942-62
  • Grant Number: W-7405-ENG-26
  • Office of Scientific & Technical Information Report Number: 5531551
  • Archival Resource Key: ark:/67531/metadc1093982

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • January 1, 1983

Added to The UNT Digital Library

  • Feb. 10, 2018, 10:06 p.m.

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  • March 23, 2018, 6:17 p.m.

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Corwin, W.R.; Klueh, R.L. & Vitek, J.M. Effect of specimen size and nickel content on the impact properties of 12 Cr-1 MoVW ferritic steel, article, January 1, 1983; Tennessee. (digital.library.unt.edu/ark:/67531/metadc1093982/: accessed August 17, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.