Irradiation damage of ferritic/martensitic steels: Fusion program data applied to a spallation neutron source

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Ferritic/martensitic steels were chosen as candidates for future fusion power plants because of their superior swelling resistance and better thermal properties than austenitic stainless steels. For the same reasons, these steels are being considered for the target structure of a spallation neutron source, where the structural materials will experience even more extreme irradiation conditions than expected in a fusion power plant first wall (i.e., high-energy neutrons that produce large amounts of displacement damage and transmutation helium). Extensive studies on the effects of neutron irradiation on the mechanical properties of ferritic/martensitic steels indicate that the major problem involves the effect of ... continued below

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8 p.

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Klueh, R.L. June 1, 1997.

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  • Klueh, R.L. Oak Ridge National Lab., TN (United States). Metals and Ceramics Div.

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Ferritic/martensitic steels were chosen as candidates for future fusion power plants because of their superior swelling resistance and better thermal properties than austenitic stainless steels. For the same reasons, these steels are being considered for the target structure of a spallation neutron source, where the structural materials will experience even more extreme irradiation conditions than expected in a fusion power plant first wall (i.e., high-energy neutrons that produce large amounts of displacement damage and transmutation helium). Extensive studies on the effects of neutron irradiation on the mechanical properties of ferritic/martensitic steels indicate that the major problem involves the effect of irradiation on fracture, as determined by a Charpy impact test. There are indications that helium can affect the impact behavior. Even more helium will be produced in a spallation neutron target material than in the first wall of a fusion power plant, making helium effects a prime concern for both applications. 39 refs., 10 figs.

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8 p.

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INIS; OSTI as DE97006405

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  • 126. annual meeting of the Minerals, Metals and Materials Society, Orlando, FL (United States), 9-13 Feb 1997

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  • Other: DE97006405
  • Report No.: CONF-970201--29
  • Grant Number: AC05-96OR22464
  • Office of Scientific & Technical Information Report Number: 486193
  • Archival Resource Key: ark:/67531/metadc676110

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  • June 1, 1997

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  • July 25, 2015, 2:21 a.m.

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  • Jan. 22, 2016, 11:44 a.m.

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Klueh, R.L. Irradiation damage of ferritic/martensitic steels: Fusion program data applied to a spallation neutron source, article, June 1, 1997; Tennessee. (digital.library.unt.edu/ark:/67531/metadc676110/: accessed September 25, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.