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RESEARCH PAPERS

The Transition Between Mild and Severe Wear for Boundary-Lubricated Steels

[+] Author and Article Information
B. Samuels, M. N. Richards

Shell Research Ltd., Thornton Research Centre, Chester CH1 3SH, England

J. Tribol 113(1), 65-72 (Jan 01, 1991) (8 pages) doi:10.1115/1.2920605 History: Received January 05, 1990; Revised August 01, 1990; Online June 05, 2008

Abstract

The wear of AISI-4340 steel under boundary lubrication has been measured in reciprocating sliding. As the hardness of martensitic specimens is reduced from 700 Hv to 250 Hv the wear passes through a transition from “mild” to “severe” wear. A two-component wear model, associating the wear mechanisms with sub-surface and surface plasticity controlled modes of asperity deformation, has been quantitatively fitted to the experimental data. Good agreement is found between the values of constants in the model obtained in this way, and other theoretical and experimental data in the literature. The model can also account for the results of increasing the applied load, by allowing for the effects of increased friction and plastic collapse and removal of the most severely deformed asperities.

Copyright © 1991 by The American Society of Mechanical Engineers
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