Publication detail

Cyclic response and early damage evolution in multiaxial cyclic loading of 316L austenitic steel

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"
}