Effect of Hardness, Surface Finish and Grain Size on Rolling Contact Fatigue Life of M50 Bearing Steel

Abstract

The effect of hardness, surface finish and grain size upon the compressive rolling contact fatigue strength of M-50 bearing steel has been studied. Considerable testing on the RC Rig and statistical treatment methods have been included. A mathematical expression relating these variables to life expectancy is presented and the optimization of these variables is discussed. It is shown that bearing fatigue of M50 increases by increasing hardness, decreasing surface, and increasing grain size. The optimum life identified occurs at Rc 64 hardness, 1.5 RMS surface finish, and a grain size of ASTM 2

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1958
Accession Number
ADA284420

Entities

People

  • R. A. Baughman

Organizations

  • General Electric

Tags

DTIC Thesaurus Topics

  • Applied Mechanics
  • Bearings
  • Data Science
  • Engineering
  • Equations
  • Fatigue Life
  • Fatigue Tests (Mechanics)
  • Finishes
  • Grain Size
  • Hardness
  • Information Science
  • Mechanical Engineering
  • Sensitivity
  • Statistical Analysis
  • Statistical Data
  • Statistical Distributions
  • Test Methods

Fields of Study

  • Materials science

Readers

  • Materials Science (Mechanical Engineering).
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).