Detail publikace

Fatigue damage of ultrafine-grain copper in very-high cycle fatigue region

LUKÁŠ, P. KUNZ, L. NAVRÁTILOVÁ, L. BOKŮVKA, O.

Anglický název

Fatigue damage of ultrafine-grain copper in very-high cycle fatigue region

Typ

Článek recenzovaný mimo WoS a Scopus

Jazyk

en

Originální abstrakt

Ultrafine-grained copper produced by ECAP technique was tested in ultrasonic fatigue in the region of lives from 10^8 to 2x10^10 cycles. The fatigue strength of ultrafine-grained copper is by a factor of 2 higher than that of conventional-grain copper. The occurrence of surface fatigue slip markings is rare. No grain coarsening was observed either in bulk or in areas underneath the surface slip markings. Localized collective grain-boundary slip of near-by oriented grains is considered to be the main damage mechanism leading to fatigue microcrack initiation either directly in the roots of surface intrusions or underneath the surface slip markings.

Klíčová slova anglicky

very-high cycle region, fatigue, UFG copper, slip markings, crack initiation

Vydáno

2011-04-25

ISSN

0921-5093

Ročník

528

Číslo

22-23

Strany od–do

7036–7040

Počet stran

5

BIBTEX


@article{BUT88368,
  author="Petr {Lukáš} and Ludvík {Kunz} and Lucie {Navrátilová} and Otakar {Bokůvka}",
  title="Fatigue damage of ultrafine-grain copper in very-high cycle fatigue region",
  journal="MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING",
  year="2011",
  volume="528",
  number="22-23",
  pages="7036--7040",
  issn="0921-5093"
}