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MAZÁNOVÁ, V. ŠKORÍK, V. KRUML, T. POLÁK, J.
Original Title
Cyclic response and early damage evolution in multiaxial cyclic loading of 316L austenitic steel
Type
journal article in Web of Science
Language
English
Original Abstract
Cyclic stress-strain response and fatigue damage character has been investigated in austenitic stainless steel 316L. Hollow cylindrical specimens were cyclically deformed in torsion and combined axial-torsion under constant strain rate condition and different constant strain and shear strain amplitudes. In-phase and 90° out-of-phase cyclic straining was applied and the stress and plastic strain response has been recorded. Cyclic hardening/softening curves were assessed and plotted using equivalent stress and strain. Long-term cyclic hardening followed initial cyclic softening in case of high strain amplitudes. Cyclic hardening was proved to be connected with the formation of strain induced martensite. Cyclic stress-strain curves were determined. The study of the surface damage in fractured specimens identified the types and directions of principal cracks. FIB cutting revealed the mechanisms of the early fatigue damage leading to production of persistent slip markings consisting of extrusions and intrusions. Fatigue crack initiated typically from the tip of intrusions in all straining conditions.
Keywords
Cyclic plasticity; 316L steel; Multiaxial straining; Damage mechanism; Crack initiation
Authors
MAZÁNOVÁ, V.; ŠKORÍK, V.; KRUML, T.; POLÁK, J.
Released
1. 7. 2017
Publisher
ELSEVIER
ISBN
0142-1123
Periodical
INTERNATIONAL JOURNAL OF FATIGUE
Year of study
100
Number
2
State
United Kingdom of Great Britain and Northern Ireland
Pages from
466
Pages to
476
Pages count
11
URL
http://www.sciencedirect.com/science/article/pii/S0142112316303814
BibTex
@article{BUT133251, author="Veronika {Mazánová} and Viktor {Škorík} and Tomáš {Kruml} and Jaroslav {Polák}", title="Cyclic response and early damage evolution in multiaxial cyclic loading of 316L austenitic steel", journal="INTERNATIONAL JOURNAL OF FATIGUE", year="2017", volume="100", number="2", pages="466--476", doi="10.1016/j.ijfatigue.2016.11.018", issn="0142-1123", url="http://www.sciencedirect.com/science/article/pii/S0142112316303814" }