Flat faces of steel pins were slid on an eutectic aluminium silicon alloy under lubricated condition in the mean contact pressure range and sliding speed. Two transition in wear rate were observed, at and . The wear rate in the regime was found to be very small and within the measuring instrument resolution and also insensitive to contact pressure. The regime is designated ultramild wear. Lack of plastic flow, minimal fragmentation of silicon particles, and the presence of undistorted voids on the fractured and unfractured silicon particles in the subsurface suggest that the state of stress in the near surface region is elastic. Contact mechanical calculations demonstrate that at contact pressures , the system is likely to shakedown to an elastic state.
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October 2007
Technical Papers
Ultra Mild Wear in Lubricated Tribology of an Aluminium Alloy
Sarmistha Das,
Sarmistha Das
Department of Mechanical Engineering,
Indian Institute of Science
, Bangalore—560012, India
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K. Varalakshmi,
K. Varalakshmi
Department of Mechanical Engineering,
Indian Institute of Science
, Bangalore—560012, India
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V. Jayaram,
V. Jayaram
Department of Metallurgy,
Indian Institute of Science
, Bangalore—560012, India
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S. K. Biswas
S. K. Biswas
Department of Mechanical Engineering,
e-mail: skbis@mecheng.iisc.ernet.in
Indian Institute of Science
, Bangalore—560012, India
Search for other works by this author on:
Sarmistha Das
Department of Mechanical Engineering,
Indian Institute of Science
, Bangalore—560012, India
K. Varalakshmi
Department of Mechanical Engineering,
Indian Institute of Science
, Bangalore—560012, India
V. Jayaram
Department of Metallurgy,
Indian Institute of Science
, Bangalore—560012, India
S. K. Biswas
Department of Mechanical Engineering,
Indian Institute of Science
, Bangalore—560012, Indiae-mail: skbis@mecheng.iisc.ernet.in
J. Tribol. Oct 2007, 129(4): 942-951 (10 pages)
Published Online: May 20, 2007
Article history
Received:
March 28, 2006
Revised:
May 20, 2007
Citation
Das, S., Varalakshmi, K., Jayaram, V., and Biswas, S. K. (May 20, 2007). "Ultra Mild Wear in Lubricated Tribology of an Aluminium Alloy." ASME. J. Tribol. October 2007; 129(4): 942–951. https://doi.org/10.1115/1.2768615
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