A Study of Cyclic Fracture of Structural Materials Under Low-Cycle Overloads

The influence of preliminary low-cycle overloads on the fatigue fracture resistance in the stages of formation and propagation of cracks in cyclically hardened steels is studied. The regular features of changes in the structural state under the overloads and its relation to the stress-strain diagram...

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Veröffentlicht in:	Metal science and heat treatment 2021-03, Vol.62 (11-12), p.759-764
Hauptverfasser:	Smirnova, L. L., Zinin, A. V.
Format:	Artikel
Sprache:	eng
Schlagworte:	Characterization and Evaluation of Materials Chemistry and Materials Science Classical Mechanics Crack propagation Damage accumulation Engineering Thermodynamics Fatigue cracks Fatigue failure Fracture Fracture toughness Heat and Mass Transfer Materials Science Metal fatigue Metallic Materials Overloading Stress-strain curves Stress-strain relationships
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Beschreibung
Zusammenfassung:	The influence of preliminary low-cycle overloads on the fatigue fracture resistance in the stages of formation and propagation of cracks in cyclically hardened steels is studied. The regular features of changes in the structural state under the overloads and its relation to the stress-strain diagram are determined using metallographic and x-ray diffraction analyses. The prehistory of the process of fatigue loading is shown to affect the kinetics of the accumulation of damage and the mechanism of fatigue fracture of the steel.
ISSN:	0026-0673 1573-8973
DOI:	10.1007/s11041-021-00634-4