Fundamentals of sliding wear in steels
Metal composition and microstructure have a significant affect on the degree of wear. The strains produced during sliding wear exceed 5.5 true shear strain. Debris in ferrous materials particles form at a critical shear strain of 5-6. Wear particle formation in ferrous metals is associated with dislocations structures. Cracks initiate at or around dislocation cell boundaries, second phase particles, or inclusions. Crack propagation typically occurs along cell boundaries. Sliding wear debris of ferrous materials are pyrophoric, for which oxidation occurs during platelet separation from the substrate. The degree of wear particle oxidation is dependant on the availability of oxygen, the extent of deformation, the rate of heat removal, and the specific area of the wear particle. 44 figures.
- Research Organization:
- Lawrence Berkeley Lab., CA (USA)
- DOE Contract Number:
- AC03-76SF00098
- OSTI ID:
- 6620268
- Report Number(s):
- LBL-15164; ON: DE83004185
- Resource Relation:
- Other Information: Portions of document are illegible. Thesis
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
STEELS
WEAR
CRACK PROPAGATION
DISLOCATIONS
EXPERIMENTAL DATA
FRICTION
MICROSTRUCTURE
PARTICLES
SCANNING ELECTRON MICROSCOPY
TRANSMISSION ELECTRON MICROSCOPY
ALLOYS
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
DATA
ELECTRON MICROSCOPY
INFORMATION
IRON ALLOYS
IRON BASE ALLOYS
LINE DEFECTS
MICROSCOPY
NUMERICAL DATA
360103* - Metals & Alloys- Mechanical Properties