Crack initiation in smooth fatigue specimens of austenitic stainless steel in light water reactor environments. Metadata

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Title

  • Main Title Crack initiation in smooth fatigue specimens of austenitic stainless steel in light water reactor environments.

Creator

  • Author: Chopra, O. K.
    Creator Type: Personal
  • Author: Smith, J. L.
    Creator Type: Personal

Contributor

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

Publisher

  • Name: Argonne National Laboratory
    Place of Publication: Illinois
    Additional Info: Argonne National Lab., IL (United States)

Date

  • Creation: 1999-04-08

Language

  • English

Description

  • Content Description: The fatigue design curves for structural materials specified in Section III of the ASME Boiler and Pressure Vessel Code are based on tests of smooth polished specimens at room temperature in air. The effects of light water reactor (LWR) coolant environments are not explicitly addressed by the Code design curves; however, recent test data illustrate the detrimental effects of LWR coolant environments on the fatigue resistance of austenitic stainless steels (SSs). Certain loading and environmental conditions have led to test specimen fatigue lives that are significantly shorter than those obtained in air. Results of fatigue tests that examine the influence of reactor environments on crack initiation and crack growth of austenitic SSs are presented. Block loading was used to mark the fracture surface to determine crack length as a function of fatigue cycles in water environments, Crack lengths were measured by scanning electron microscopy. The mechanism for decreased fatigue life in LWR environments is discussed, and crack growth rates in the smooth fatigue specimens are compared with existing data from studies of crack growth rates.
  • Physical Description: 10 p.

Subject

  • Keyword: Building Materials
  • Keyword: Boilers
  • Keyword: Fractures
  • STI Subject Categories: 36 Materials Science
  • Keyword: Crack Propagation
  • Keyword: Stainless Steels
  • Keyword: Coolants
  • Keyword: Scanning Electron Microscopy
  • Keyword: Water
  • Keyword: Design
  • Keyword: Pressure Vessels

Source

  • Conference: ASME/JSME Joint Pressure Vessel and Piping Conference, Boston, MA (US), 08/01/1999--08/05/1999

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

  • Report No.: ANL/ET/CP-98400
  • Grant Number: W-31109-ENG-38
  • Office of Scientific & Technical Information Report Number: 12388
  • Archival Resource Key: ark:/67531/metadc622842

Note

  • Display Note: OSTI as DE00012388
  • Display Note: Medium: P; Size: 10 pages