Publication detail

FATIGUE PROPERTIES AND CRACK GROWTH IN EUROFER STEEL

KUBĚNA, I. KRUML, T.

Czech title

Únavové vlastnosti a růst trhlin v oceli EUROFER

English title

FATIGUE PROPERTIES AND CRACK GROWTH IN EUROFER STEEL

Type

journal article - other

Language

en

Original abstract

Cyclic plastic response of the Eurofer reduced activation ferritic-martensitic steel at room temperature was studied. Strain amplitude was kept constant during cycling. The softening curves in two representation were obtained. The fatigue life curve in NF = f(ea) representation and the cyclic stress-strain curve were determined. The main part of the study was focused on surface relief observation: determination of crack nucleation sites and kinetics of crack growth. The crack growth coefficient kg was measured, allowing the fatigue life predictions based on the kinetics of short crack growth. The fracture surfaces were observed using scanning electron microscopy (SEM). Nucleation sites, striation and other typical fatigue features were detected.

Czech abstract

Byla studována cyklická odezva feriticko-martenzitické oceli Eurofer, zkoušky byly prováděny v řízení konstantní celkové deformace. Byly získány křivky únavového zpevnění a změkčení ve dvou reprezentacích. Byly získány křivky únavového života. Hlavní cíl práce byl zaměřen na pozorování iniciace krátkých trhlin a jejich následném růstu. Byly pozorovány lomové plochy a nalezeny typické prvky únavového poškození.

English abstract

Cyclic plastic response of the Eurofer reduced activation ferritic-martensitic steel at room temperature was studied. Strain amplitude was kept constant during cycling. The softening curves in two representation were obtained. The fatigue life curve in NF = f(ea) representation and the cyclic stress-strain curve were determined. The main part of the study was focused on surface relief observation: determination of crack nucleation sites and kinetics of crack growth. The crack growth coefficient kg was measured, allowing the fatigue life predictions based on the kinetics of short crack growth. The fracture surfaces were observed using scanning electron microscopy (SEM). Nucleation sites, striation and other typical fatigue features were detected.

Keywords in Czech

nízkocyklová únava, šíření krátkých trhlin, únavové změkčení

Keywords in English

low cycle fatigue, short crack propagation, fatigue softening

RIV year

2009

Released

10.07.2009

Location

Žilina, Slovensko

ISSN

1335-0803

Journal

Materiálové inžinierstvo

Volume

XVI

Number

3a/2009

Pages from–to

32–36

Pages count

5

BIBTEX


@article{BUT48616,
  author="Ivo {Kuběna} and Tomáš {Kruml},
  title="FATIGUE PROPERTIES AND CRACK GROWTH IN EUROFER STEEL",
  journal="Materiálové inžinierstvo",
  year="2009",
  volume="XVI",
  number="3a/2009",
  month="July",
  pages="32--36",
  address="Žilina, Slovensko",
  issn="1335-0803"
}