Publication result detail

Low cycle fatigue behavior of Sanicro 25 steel at room and at elevated temperature elevated temperature

POLÁK, J.; PETRÁŠ, R.; HECZKO, M.; KUBĚNA, I.; KRUML, T.; CHAI, G.

Original Title

Low cycle fatigue behavior of Sanicro 25 steel at room and at elevated temperature elevated temperature

English Title

Low cycle fatigue behavior of Sanicro 25 steel at room and at elevated temperature elevated temperature

Type

WoS Article

Original Abstract

Austenitic heat resistant Sanicro 25 steel developed for high temperature applications in power generation industry has been subjected to strain controlled low cycle fatigue tests at ambient and at elevated temperature in awide interval of strain amplitudes. Fatigue hardening/softening curves, cyclic stress–strain curves and fatigue life curves were evaluated at room temperature and at 700 C. The internal dislocation structures of the material at room and at elevated temperature were studied using transmission electron microscopy. High resolution surface observations and FIB cuts revealed early damage at room temperature in the form of persistent slip bands and at elevated temperatures oxidized grain boundary cracks. Dislocation arrangement study and surface observations were used to identify the cyclic slip localization and to discuss the fatigue softening/hardening behavior and the temperature dependence of the fatigue life.

English abstract

Austenitic heat resistant Sanicro 25 steel developed for high temperature applications in power generation industry has been subjected to strain controlled low cycle fatigue tests at ambient and at elevated temperature in awide interval of strain amplitudes. Fatigue hardening/softening curves, cyclic stress–strain curves and fatigue life curves were evaluated at room temperature and at 700 C. The internal dislocation structures of the material at room and at elevated temperature were studied using transmission electron microscopy. High resolution surface observations and FIB cuts revealed early damage at room temperature in the form of persistent slip bands and at elevated temperatures oxidized grain boundary cracks. Dislocation arrangement study and surface observations were used to identify the cyclic slip localization and to discuss the fatigue softening/hardening behavior and the temperature dependence of the fatigue life.

Keywords

Sanicro 25 steel, Cyclic plasticity, Dislocation structure, Fatigue life, Effect of temperature

Key words in English

Sanicro 25 steel, Cyclic plasticity, Dislocation structure, Fatigue life, Effect of temperature

Authors

POLÁK, J.; PETRÁŠ, R.; HECZKO, M.; KUBĚNA, I.; KRUML, T.; CHAI, G.

RIV year

2015

Released

30.07.2014

Publisher

Elsevier

ISBN

0921-5093

Periodical

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING

Volume

2014

Number

615

State

Swiss Confederation

Pages from

175

Pages to

182

Pages count

7

BibTex

@article{BUT112313,
  author="POLÁK, J. and PETRÁŠ, R. and HECZKO, M. and KUBĚNA, I. and KRUML, T. and CHAI, G.",
  title="Low cycle fatigue behavior of Sanicro 25 steel at room and at elevated temperature elevated temperature",
  journal="MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING",
  year="2014",
  volume="2014",
  number="615",
  pages="175--182",
  doi="10.1016/j.msea.2014.07.075",
  issn="0921-5093"
}