Effect of Material Microstructure on Scuffing Behavior of Ferrous Alloys

Paper #:
  • 2011-01-1091

Published:
  • 2011-04-12
Citation:
Han, J., Barber, G., Zou, Q., Sun, X. et al., "Effect of Material Microstructure on Scuffing Behavior of Ferrous Alloys," SAE Technical Paper 2011-01-1091, 2011, https://doi.org/10.4271/2011-01-1091.
Pages:
8
Abstract:
Scuffing is one of the major problems that influence the life cycle and reliability of several auto components, including engine cylinder kits, flywheels, camshafts, crankshafts, and gears. Ferrous casting materials, such as gray cast iron, ductile cast iron and austempered ductile cast iron (ADI) are widely applied in these components due to their self-lubricating characteristics. The purpose of this research is to determine the scuffing behavior of these three types of cast iron materials and compare them with 1050 steel. Rotational ball-on-disc tests were conducted with white mineral oil as the lubricant under variable sliding speeds and loads. The results indicate that the scuffing initiation is due to either crack propagation or plastic deformation. It is found that ADI exhibits the highest scuffing resistance among these materials.
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