Creep-fatigue interactions in an austenitic stainless steel

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A phenomenological model of the interaction between creep and fatigue in Type 304 stainless steel at elevated temperatures is presented. The model is based on a crack-growth equation and an equation governing cavity growth, expressed in terms of current plastic strain and plastic strain rate. Failure is assumed to occur when a proposed interaction equation is satisfied. Various parameters of the equations can be obtained by correlation with continuously cycling fatigue and monotonic creep-rupture test data, without the use of any hold-time fatigue tests. Effects of various wave shapes such as tensile, compressive, and symmetrical hold on the low-cycle fatigue ... continued below

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Pages: 23

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Majumdar, S. & Maiya, P.S. January 1, 1978.

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Description

A phenomenological model of the interaction between creep and fatigue in Type 304 stainless steel at elevated temperatures is presented. The model is based on a crack-growth equation and an equation governing cavity growth, expressed in terms of current plastic strain and plastic strain rate. Failure is assumed to occur when a proposed interaction equation is satisfied. Various parameters of the equations can be obtained by correlation with continuously cycling fatigue and monotonic creep-rupture test data, without the use of any hold-time fatigue tests. Effects of various wave shapes such as tensile, compressive, and symmetrical hold on the low-cycle fatigue life can be computed by integrating the damage-rate equations along the appropriate loading path. Microstructural evidence in support of the proposed model is also discussed.

Physical Description

Pages: 23

Notes

Dep. NTIS, PC A02/MF A01.

Source

  • 2. conference on temperature and environmental effects on failure, Waterloo, Ontario, Canada, 21 Apr 1978

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  • Report No.: CONF-780486-1
  • Grant Number: W-31-109-ENG-38
  • Office of Scientific & Technical Information Report Number: 6629093
  • Archival Resource Key: ark:/67531/metadc1194917

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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.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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Creation Date

  • January 1, 1978

Added to The UNT Digital Library

  • July 3, 2018, 8:14 a.m.

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  • Oct. 31, 2018, 4:09 p.m.

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Majumdar, S. & Maiya, P.S. Creep-fatigue interactions in an austenitic stainless steel, article, January 1, 1978; Illinois. (https://digital.library.unt.edu/ark:/67531/metadc1194917/: accessed March 25, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.