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Gall Resistance of Cast Graphitic Aluminum Alloys
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English
Abstract
Gall resistance of cast aluminum alloys containing dispersed graphite particles was investigated. Graphite particles were introduced by injecting nickel-coated graphite powders through an inert gas stream into molten aluminum alloys and then rapidly solidifying the melt in permanent mold castings. Incorporation of graphite particles permits aluminum alloys to withstand poor lubrication conditions (low bearing parameters) successfully without galling. Gall resistance increases with graphite content over the range studied.
Aluminum-silicon-nickel alloys containing more than about 1.8 weight per cent graphite in one or both mating members are able to run under conditions of boundary lubrication without galling. Dispersed graphite improves the gall resistance of aluminum alloys through a combination of several mechanisms; the principal one being the formation of a graphite-rich layer on the bearing surface of mated members.
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Citation
Badia, F. and Rohatgi, P., "Gall Resistance of Cast Graphitic Aluminum Alloys," SAE Technical Paper 690275, 1969, https://doi.org/10.4271/690275.Also In
References
- Smith J. M. “Case for the All Aluminum Engine.” SAE paper 385A
- Godfrey D. Proceedings, “International Symposium on Lubrication and Wear.” Musters D. Stemlicht B. McCutchan Publishing Co., 1965 285
- Courtney-Pratt J. S. Tudor G. K. “An Analysis of the Lubrication Between the Piston Rings and Cylinder Wall of a Running Engine.” Proc. of the Inst. of Mech. Eng. 155 1946 293
- Collins B. T. Schneider C. P. “Sintered Metal Friction Material.” International Powder Metallurgy Conference New York 1965
- Bonis L. J. “Standard Ilkoloy Family of Self-Lubricating Composite Materials.” Ilikon Paper AFIL-11 Ilikon Corp. Natick, Mass. 1965
- Van Wyk J. W. “Powder Metal + Solid Lubricant = a New Bearing Material.” Metal Progr 86 September 1964 101
- Batchelor C. S. “Powder Metallurgy,” Leszyhski Werner Interscience 1961 825
- Badia F. A. Rohatgi P. K. “Dispersion of Graphite Particles in Aluminum Castings through Injection of the Melt.”
- Fuller D. D. “Theory and Practice of Lubrication for Engineers,” John Wiley 1963 235
- Bowden F. P. Tabor D. “The Friction and Lubrication of Solids.” Oxford Clarendon Press 1964 180
- Angus T. A. “Physical and Engineering Properties of Cast Iron.” 1960 302
- Abe Y. “Wear Resistant Properties of Cast Irons Having Different Shapes of Graphite.” Sci. Rep. Res. Inst., Tohoku Univ., Ser. A 15 1 1963 12
- Braithwate E. R. “Solid Lubricants and Surfaces.” Pergamon Press 1964 139
- Savage R. H. “Graphite Lubrication.” J. of Appl. Phys. 19 1 1948 1