A FUNDAMENTAL STUDY OF ROLLING CONTACT FATIGUE
Abstract
An investigation was begun on rolling contact fatigue. The initial plastic flow in single crystals when stressed by a rolling steel ball will be studied by etch pit techniques. Single crystals of LiF were etched with a 1.5 x 10 to the 4th power molar solution of FeCl3 before and after stressing. Rather indistinct pyramidal pits were observed on old dislocations, and sharp square pyramidal pits on new dislocations which indicate the first areas of plastic flow and where a fatigue crack could start. A test apparatus was designed for rolling balls on the surface of single crystals under carefully controlled conditions to obtain plastic flow at the contact. It is planned to study the influence of lubricants on rolling contact and torsion fatigue.
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1961
- Accession Number
- AD0265615
Entities
People
- E.p. Kingsbury
- G.s. Reichenbach