Estimation of mechanical properties of cast stainless steels during thermal aging in LWR systems

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Description

A procedure and correlations are presented for predicting Charpy-impact energy, tensile flow stress, fracture toughness J-R curve, and J{sub IC} of aged cast stainless steels from known material information. The ``saturation`` impact strength and fracture toughness of a specific cast stainless steel, i.e., the minimum value that would be achieved for the material after long-term service, is estimated from the chemical composition of the steel. Mechanical properties as a function of time and temperature of reactor service are estimated from impact energy and flow stress of the unaged material and the kinetics of embrittlement, which are also determined from chemical ... continued below

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33 p.

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Chopra, O. K. October 1991.

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Description

A procedure and correlations are presented for predicting Charpy-impact energy, tensile flow stress, fracture toughness J-R curve, and J{sub IC} of aged cast stainless steels from known material information. The ``saturation`` impact strength and fracture toughness of a specific cast stainless steel, i.e., the minimum value that would be achieved for the material after long-term service, is estimated from the chemical composition of the steel. Mechanical properties as a function of time and temperature of reactor service are estimated from impact energy and flow stress of the unaged material and the kinetics of embrittlement, which are also determined from chemical composition. The J{sub IC} values are determined from the estimated J-R curve and flow stress. Examples of estimating mechanical properties of cast stainless steel components during reactor service are presented. A common predicted lower-bound J-R curve for cast stainless steels of unknown chemical composition is also defined for a given grade of steel, ferrite content, and temperature.

Physical Description

33 p.

Notes

INIS; OSTI as DE94008471

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  • Other Information: PBD: Oct 1991

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  • Other: DE94008471
  • Report No.: ANL/MCT/PP--74905
  • Grant Number: W-31109-ENG-38
  • DOI: 10.2172/142528 | External Link
  • Office of Scientific & Technical Information Report Number: 142528
  • Archival Resource Key: ark:/67531/metadc625689

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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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  • October 1991

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  • June 16, 2015, 7:43 a.m.

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  • April 8, 2016, 12:33 p.m.

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Chopra, O. K. Estimation of mechanical properties of cast stainless steels during thermal aging in LWR systems, report, October 1991; Illinois. (digital.library.unt.edu/ark:/67531/metadc625689/: accessed November 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.