Publication detail

Fatigue behaviour and surface relief in ODS steels

KRUML, T. KUBĚNA, I. POLÁK, J.

Original Title

Fatigue behaviour and surface relief in ODS steels

Type

journal article - other

Language

English

Original Abstract

Low cycle fatigue behaviour at room temperature of two 14Cr ferritic steels with ultrafine grains and strengthened by fine oxide dispersion is studied. The two steels differ mainly in the grain size distribution (uniform and bimodal). It is shown that the bimodal grain size distribution has a detrimental effect on the fatigue life time. The rough surface relief is formed in grains bigger than 1 micrometer in diameter. Nucleation and early growth of fatigue cracks is facilitated by the surface relief which leads to important reduction of the fatigue life.

Keywords

fatigue; 14Cr ODS ferritic steel; life time; surface relief

Authors

KRUML, T.; KUBĚNA, I.; POLÁK, J.

RIV year

2011

Released

6. 6. 2011

ISBN

1877-7058

Periodical

Procedia Engineering

Year of study

2011

Number

10

State

Kingdom of the Netherlands

Pages from

1685

Pages to

1690

Pages count

6

BibTex

@article{BUT72714,
  author="Tomáš {Kruml} and Ivo {Kuběna} and Jaroslav {Polák}",
  title="Fatigue behaviour and surface relief in ODS steels",
  journal="Procedia Engineering",
  year="2011",
  volume="2011",
  number="10",
  pages="1685--1690",
  issn="1877-7058"
}