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  • 1
    facet.materialart.
    Unknown
    Rolling-element fatigue life of AMS 5749 corrosion resistant, high temperature bearing steel (1977)
    In:  Other Sources
    Details
    Publication Date: 2019-07-13
    Keywords: METALLIC MATERIALS
    Type: ASME PAPER 77-LUB-30 , Joint Lubrication Conference; Oct 03, 1977 - Oct 05, 1977; Kansas City, MO; US
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
    facet.materialart.
    Unknown
    Rolling-element fatigue life of AMS 5749 corrosion resistant, high temperature bearing steel (1977)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: The rolling element fatigue lives of AMS 5749 and AISI M-50 were compared in tests run in the five ball fatigue tester and the rolling contact fatigue tester. The effects of double vacuum melting and retained austenite on the life of AMS 5749 were determined in five ball fatigue tests. The double vacuum melting process consisted of induction vacuum melting followed by vacuum arc remelting (VIM-VAR). In the five ball tests, VIM-VAR AMS 5749 gave lives at least six times that of VIM-VAR AISI M-50. Similar tests in the rolling contact fatigue tester showed no significant difference in the lives of the two materials. The rolling element fatigue life of VIM-VAR AMS 5749 was at least 14 times that of vacuum induction melted AMS 5749. A trend toward increased rolling element fatigue life with decreased retained austenite is apparent, but the confidence that all experimental differences are significant is not great.
    Keywords: METALLIC MATERIALS
    Type: NASA-TM-73698 , E-9101 , 1977 Joint Lubrication Conf.; Oct 03, 1977 - Oct 05, 1977; Kansas City, MO; United States
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
    facet.materialart.
    Unknown
    Ferrographic analysis of wear debris generated in accelerated rolling element fatigue tests (1977)
    In:  CASI
    Details
    Publication Date: 2019-07-13
    Description: The types and quantities of wear particles generated during accelerated ball rolling contact fatigue tests were determined. Ball specimens were made of AMS 5749, a corrosion resistant, high-temperature bearing steel. The lubricant was a super-refined naphthenic mineral oil. Conditions included a maximum Hertz stress of 5.215 times 10 to the 9th power Pa and a shaft speed of 10,000 rpm. Four types of wear particles were observed; normal rubbing wear particles, fatigue spall particles, spheres, and friction polymer.
    Keywords: METALLIC MATERIALS
    Type: NASA-TM-73715 , E-9260 , Joint Lubrication Conf.; Oct 03, 1977 - Oct 05, 1977; Kansas City, MO; United States
    Format: application/pdf
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    NASA TECHNICAL REPORTS
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