Publication detail

THERMO-MECHANICAL AND ISOTHERMAL FATIGUE BEHAVIOR OF AUSTENITIC STAINLESS STEEL AISI 316L.

ŠKORÍK, V. ŠULÁK, I. OBRTLÍK, K. POLÁK, J.

English title

THERMO-MECHANICAL AND ISOTHERMAL FATIGUE BEHAVIOR OF AUSTENITIC STAINLESS STEEL AISI 316L.

Type

conference paper

Language

en

Original abstract

Many structural components of nuclear power plant systems are made of austenitic stainless steels. These structures undergo degradation by thermo-mechanical fatigue (TMF) caused by simultaneous cyclic straining and temperature cycling, particularly during start-up, shut-down and transient operations. The present work reports the cyclic deformation behavior and fatigue damage of austenitic stainless steel AISI 316L during TMF and isothermal fatigue (IF) testing in air. Total strain controlled in-phase TMF loading in the temperature range 200 – 600 °C and isothermal fatigue (IF) at 600 °C were performed. Hardening/softening curves, cyclic stress-strain response and fatigue life diagrams were obtained both for TMF and IF tests. Fatigue damage was documented using surface relief and fracture surface observations. Mean stress evolution and fatigue degradation data are employed to discuss the fatigue behavior of 316L steel both in TMF and IF regimes.

English abstract

Many structural components of nuclear power plant systems are made of austenitic stainless steels. These structures undergo degradation by thermo-mechanical fatigue (TMF) caused by simultaneous cyclic straining and temperature cycling, particularly during start-up, shut-down and transient operations. The present work reports the cyclic deformation behavior and fatigue damage of austenitic stainless steel AISI 316L during TMF and isothermal fatigue (IF) testing in air. Total strain controlled in-phase TMF loading in the temperature range 200 – 600 °C and isothermal fatigue (IF) at 600 °C were performed. Hardening/softening curves, cyclic stress-strain response and fatigue life diagrams were obtained both for TMF and IF tests. Fatigue damage was documented using surface relief and fracture surface observations. Mean stress evolution and fatigue degradation data are employed to discuss the fatigue behavior of 316L steel both in TMF and IF regimes.

Keywords in English

Thermo-mechanical fatigue (TMF), Isothermal fatigue (IF), In-phase cycling (IP), AISI 316L, Fatigue life

RIV year

2015

Released

03.06.2015

Publisher

TANGER Ostrava, s.r.o.

Location

Ostrava

ISBN

978-80-87294-58-1

Book

Proceedings of METAL 2015

Edition number

1

Pages from–to

851–856

Pages count

6

BIBTEX


@inproceedings{BUT125703,
  author="Viktor {Škorík} and Ivo {Šulák} and Karel {Obrtlík} and Jaroslav {Polák},
  title="THERMO-MECHANICAL AND ISOTHERMAL FATIGUE BEHAVIOR OF AUSTENITIC STAINLESS STEEL AISI 316L.",
  booktitle="Proceedings of METAL 2015",
  year="2015",
  month="June",
  pages="851--856",
  publisher="TANGER Ostrava, s.r.o.",
  address="Ostrava",
  isbn="978-80-87294-58-1"
}