Comparison of the Effects of Carbides and Nonmetallic Inclusions on Formation of Fatigue Microcracks in Steels

The effects of carbides and nonmetallic inclusions on formation of fatigue microcracks in steels for high-load bearings are determined. The running time is shown to affect the growth of parameter N c / N t for all the steels studied. The size of the carbides is shown to affect the degree of propagat...

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Bibliographic Details
Published in:Metal science and heat treatment 2019-11, Vol.61 (7-8), p.521-524
Main Authors: Glotka, A. A., Moroz, A. N.
Format: Article
Language:English
Subjects:
Analysis
Bearing steels
Carbides
Characterization and Evaluation of Materials
Chemistry and Materials Science
Classical Mechanics
Engineering Thermodynamics
Fatigue failure
Hardness
Heat and Mass Transfer
Materials Science
Metal fatigue
Metallic Materials
Microcracks
Nonmetallic inclusions
Optimization
Steel
Tungsten compounds
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Summary:The effects of carbides and nonmetallic inclusions on formation of fatigue microcracks in steels for high-load bearings are determined. The running time is shown to affect the growth of parameter N c / N t for all the steels studied. The size of the carbides is shown to affect the degree of propagation of fatigue microcracks; the fraction of carbides with fatigue microcracks grows with their size. The results obtained are helpful in choosing the direction of optimization of the structure of carbide phases in bearing steels.
ISSN:0026-0673
1573-8973
DOI:10.1007/s11041-019-00456-5