Accession Number:

ADA052169

Title:

Study of the Lubrication Mechanism of Thin Film Lubricated Concentrated Steel Contacts. The Influence of the Steel.

Descriptive Note:

Final technical rept. Aug 76-Oct 77,

Corporate Author:

METAALINSTITUUT TNO APELDOORN (NETHERLANDS) DEPT OF SURFACE TREATMENT AND TRIBOLOGY

Personal Author(s):

Report Date:

1977-10-01

Pagination or Media Count:

24.0

Abstract:

The lubrication condition of sliding concentrated steel contacts can be described in terms of transition diagrams, relating the mode of lubrication i.e. partial elastohydrodynamic EHD, boundary and unlubricated to load, speed and temperature. Increasing the percentage of alloying elements of the steel i.e. from 1.5 Cr to 5.2 Cr, 1 Mo, 0.2 V seriously impairs the load carrying capacity of the boundary lubricant film, while that of the EHD film remains unaffected. Formation of retained austenite with corresponding coarsening of the structure and some decrease in hardness mildly impairs boundary lubrication but enhances EHD lubrication. The results are compared to those of other authors and conclusions are drawn with respect to correlations between the test methods used. Author

Subject Categories:

  • Properties of Metals and Alloys
  • Lubricants and Hydraulic Fluids

Distribution Statement:

APPROVED FOR PUBLIC RELEASE