Understanding Damage Mechanisms in Ferritic/Martensitic Steels Metadata

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Title

  • Main Title Understanding Damage Mechanisms in Ferritic/Martensitic Steels

Creator

  • Author: Swindeman, R. W.
    Creator Type: Personal
  • Author: Maziasz, P. J.
    Creator Type: Personal
  • Author: Swindeman, M. J.
    Creator Type: Personal

Contributor

  • Sponsor: United States. Department of Energy.
    Contributor Type: Organization
    Contributor Info: US Department of Energy (United States)

Publisher

  • Name: Oak Ridge National Laboratory
    Place of Publication: Oak Ridge, Tennessee
  • Name: Stress Engineering Services, Inc., Mason, OH (United States)
    Place of Publication: United States

Date

  • Creation: 2003-04-22

Language

  • English

Description

  • Content Description: Advanced ferritic/martensitic steels are being used extensively in fossil energy applications. New steels such as 2 1/4Cr-W-V (T23, T24), 3Cr-W-V, 9Cr-Mo-V (T91), 7Cr-W-V, 9Cr-W-V (T92 and T911), and 12Cr-W-V (T122, SAVE 12, and NF12) are examples of tubing being used in boilers and heat recovery steam generators (1). Other products for these new steels include piping, plates, and forgings. There is concern about the high-temperature performance of the advanced steels for several reasons. First, they exhibit a higher sensitivity to temperature than the 300 series stainless steels that they often replace. Second, they tend to be metallurgically unstable and undergo significant degradation at service temperatures in the creep range. Third, the experience base is limited in regard to duration. Fourth, they will be used for thick-section, high-pressure components that require high levels of integrity. To better understand the potential limitations of these steels, damage models are being developed that consider metallurgical factors as well as mechanical performance factors. Grade 91 steel was chosen as representative of these steels for evaluation of cumulative damage models since laboratory and service exposures of grade 91 exceed 100,000 hours.
  • Physical Description: 6 pages

Subject

  • Keyword: Boilers
  • Keyword: Steels
  • Keyword: Heat Recovery
  • STI Subject Categories: 36 Materials Science
  • Keyword: Sensitivity
  • Keyword: Evaluation
  • Keyword: Steam Generators
  • Keyword: Plates
  • Keyword: Stainless Steels
  • Keyword: Creep
  • Keyword: Performance

Source

  • Conference: 17th Annual Conference on Fossil Energy Materials, Baltimore, MD (US), 04/22/2003--04/24/2003

Collection

  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI

Institution

  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Article

Format

  • Text

Identifier

  • Office of Scientific & Technical Information Report Number: 835660
  • Archival Resource Key: ark:/67531/metadc785659

Note

  • Display Note: OSTI as DE00835660
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