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Fatigue life extensionPotential fatigue rejuvenation processes were carried out on fatigue-damaged material both with and without observable surface-connected fatigue cracks. The fatigue life of fatigue-damaged MAR-M246(Hf)(DS), a directionally solidified nickel-base superalloy used in turbine airfoils, was extended by reheat treatment. The fatigue life of fatigue-cracked Inconel 718, a wrought nickel-base superalloy used in a wide variety of advanced rocket engine components, was extended by electron-beam welding to close off the surface-connected crack, followed by hot isostatic pressing and reheat treatment.
Document ID
19850018553
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Matejczyk, D. E. (Rockwell International Corp. Canoga Park, CA, United States)
Lin, J. (Rockwell International Corp. Canoga Park, CA, United States)
Date Acquired
August 12, 2013
Publication Date
April 1, 1985
Publication Information
Publication: NASA. Marshall Space Flight Center. Advan. High Pressure O2(H2 Technol.
Subject Category
Quality Assurance And Reliability
Accession Number
85N26864
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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IDRelationTitle19850018551Collected WorksAdvanced High Pressure O2/H2 Technology
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