Item Details

Effect of Decarburization on Notch Sensitivity and Fatigue-Crack-Propagation Rates in 12 MoV Stainless-Steel Sheet

by William H. Herrnstein III and Arthur J. McEvily, Jr.
Format
Book; Government Document; Online; EBook
Published
Washington, [D.C.] : National Aeronautics and Space Administration, 1961.
Language
English
Series
NASA Technical Note
Summary
"Tests were conducted in order to determine the effect of surface decarburization on the notch-sensitivity and rate of fatigue crack propagation in 12 Mov stainless-steel sheet at room temperature. Three specimen configurations were utilized in the course of the investigation: standard tensile specimen, 9-inch-wide specimens containing fatigue cracks or thread-cut notches of 0.005-inch radius, and 2-inch-wide specimens containing fatigue cracks. The 12 Mov stainless-steel sheet in the normal condition was found to have an ultimate tensile strength of 251 ksi and to be extremely notch sensitive. The material in the decarburized condition was found to have an ultimate strength of 210 ksi and to be considerably stronger than the normal material in the presence of fatigue cracks. Decarburization did not appear to have any siinfluence incluence on the rate of fatigue crack propagation in the 2-inch-wide specimens at the stress levels considered. In addition to the tests, two methods for predicting residual static strength and their application to the material are discussed."--Summary.
Description
24 p. : ill. ; 26 cm.
Mode of access: Internet.
Notes
  • Report Number: L-1354.
  • Document ID: 19980227743.
  • "NASA TN D-966."
  • "Langley Research Center, Langley Air Force Base, Va."
  • "November 1961."
  • Cover title.
  • Includes bibliographical references (p. 12).
Series Statement
NASA technical note ; D-966
Other Forms
Also available from the NASA Technical Reports Server (http://ntrs.nasa.gov/). Address as of 4/09/07: http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19980227743_1998391619.pdf.
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Technical Details

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    a| Effect of decarburization on notch sensitivity and fatigue-crack-propagation rates in 12 MoV stainless-steel sheet / c| by William H. Herrnstein III and Arthur J. McEvily, Jr.
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    a| Washington, [D.C.] : b| National Aeronautics and Space Administration, c| 1961.
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    a| 24 p. : b| ill. ; c| 26 cm.
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    a| NASA technical note ; v| D-966
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    a| Report Number: L-1354.
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    a| Document ID: 19980227743.
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    a| "NASA TN D-966."
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    a| "Langley Research Center, Langley Air Force Base, Va."
    500
      
      
    a| "November 1961."
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    a| Cover title.
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    a| Includes bibliographical references (p. 12).
    520
      
      
    a| "Tests were conducted in order to determine the effect of surface decarburization on the notch-sensitivity and rate of fatigue crack propagation in 12 Mov stainless-steel sheet at room temperature. Three specimen configurations were utilized in the course of the investigation: standard tensile specimen, 9-inch-wide specimens containing fatigue cracks or thread-cut notches of 0.005-inch radius, and 2-inch-wide specimens containing fatigue cracks. The 12 Mov stainless-steel sheet in the normal condition was found to have an ultimate tensile strength of 251 ksi and to be extremely notch sensitive. The material in the decarburized condition was found to have an ultimate strength of 210 ksi and to be considerably stronger than the normal material in the presence of fatigue cracks. Decarburization did not appear to have any siinfluence incluence on the rate of fatigue crack propagation in the 2-inch-wide specimens at the stress levels considered. In addition to the tests, two methods for predicting residual static strength and their application to the material are discussed."--Summary.
    530
      
      
    a| Also available from the NASA Technical Reports Server (http://ntrs.nasa.gov/). Address as of 4/09/07: http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19980227743_1998391619.pdf.
    538
      
      
    a| Mode of access: Internet.
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    7
    a| Cracks. 2| nasat
    650
      
    7
    a| Tensile strength. 2| nasat
    650
      
    7
    a| Residual strength. 2| nasat
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    7
    a| Vanadium alloys. 2| nasat
    650
      
    7
    a| Molybdenum alloys. 2| nasat
    650
      
    7
    a| Stainless steels. 2| nasat
    650
      
    7
    a| Metal sheets. 2| nasat
    650
      
    7
    a| Crack propagation. 2| nasat
    650
      
    7
    a| Fatigue (Materials) 2| nasat
    650
      
    7
    a| Decarburization. 2| nasat
    650
      
    7
    a| Notch sensitivity. 2| nasat
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    1
      
    a| McEvily, A. J.
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    1
      
    a| United States. b| National Aeronautics and Space Administration.
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    a| Langley Research Center.
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    b| UIU c| UIUC d| 20141113 s| google u| uiug.30112106915074 y| 1961 r| pd q| bib

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