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Time-dependent edge notch sensitivity of Inconel 718 sheet in the temperature range 900 to 1400 F (482 to 760 C)Time-dependent notch sensitivity of Inconel 718 sheet occurred at 900 to 1200 F when notched specimens were loaded below the yield strength, and tests on smooth specimens showed that small amounts of creep consumed large fractions of creep-rupture life. The severity of the notch sensitivity decreased with decreasing solution treatment temperature and increasing time and/or temperature of the aging treatment. Elimination of the notch sensitivity was correlated with a change in the dislocation mechanism from shearing to by-passing precipitate particles.
Document ID
19720024270
Acquisition Source
Legacy CDMS
Document Type
Contractor Report (CR)
Authors
Wilson, D. J. (Michigan Univ. Ann Arbor, MI, United States)
Date Acquired
September 2, 2013
Publication Date
April 1, 1972
Subject Category
Structural Mechanics
Report/Patent Number
NASA-CR-124628
REPT-043680-18-T
Accession Number
72N31920
Funding Number(s)
CONTRACT_GRANT: NGL-23-005-005
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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