SEDL / STP / STP1548-EB / STP104603

Rolling Contact Fatigue Testing of Stainless Steel and Cobalt-based Components Using Water as the Lubricant

Sherif, Mohamed Y.
SKF Engineering & Research Centre, Nieuwegein, MT

Han, Bo
SKF Engineering & Research Centre, Nieuwegein, MT

Kahlman, Lars
SKF Sverige AB, Gothenburg,

Pages: 17    Published: Oct 2012

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Abstract

The current paper presents the results obtained from testing of high-nitrogen martensitic stainless steels and a cobalt-based alloy using an accelerated rolling contact fatigue tester, the Polymet test rig. Although demineralised water is not a good lubricant in terms of, for example, its capability of building up a sufficient film thickness, it was possible to rank the tested alloys according to their performance. Corrosion products were observed on the over-rolled tracks, and the materials' resistance to pitting corrosion was assessed.