Publication detail

Application of FIB technique to study of early fatigue damage in polycrystals

MAN, J. WEIDNER, A. KUBĚNA, I. VYSTAVĚL, T. SKROTZKI, W. POLÁK, J.

Czech title

Studium počátečního únavového poškození v polykrystalech pomocí FIB techniky

English title

Application of FIB technique to study of early fatigue damage in polycrystals

Type

journal article - other

Language

en

Original abstract

Focused ion beam (FIB) technique together with other advanced microscopic techniques were applied to study early microstructural changes leading to crack initiation in fatigued polycrystals. Dislocation structures of persistent slip bands (PSBs) and surrounding matrix were revealed in the bulk of surface grains by electron channelling contrast imaging (ECCI) technique on the FIB cross-sections. True shape of extrusions, intrusions and the path of initiated fatigue cracks were assessed in three dimensions by serial FIB cross-sectioning (FIB tomography). Advantageous potential of FIB technique and its other possible utilization in fatigue crack initiation studies in polycrystals are highlighted.

Czech abstract

Technika fokusovaného iontového svazku spolu s dalšími pokročilými mikroskopickýmy technikami byla použita pro studium počátčních mikrostrukturních změn vedoucích k iniciaci trhlin v polykrystalu vystaveného cyklickému zatížení. Dislokační struktury perzistentích skluzových pásu a okoliní matrice byly pozorovány pomocí kanálového kontrastu (ECCI) a řezů připravených pomocí FIB techniky. Skutetčný tvar extruze a intruze byla stanovena pomocí FIB tomografie. Potenciál techniky FIB ve studiu inciace únavové trhliny je diskutován

English abstract

Focused ion beam (FIB) technique together with other advanced microscopic techniques were applied to study early microstructural changes leading to crack initiation in fatigued polycrystals. Dislocation structures of persistent slip bands (PSBs) and surrounding matrix were revealed in the bulk of surface grains by electron channelling contrast imaging (ECCI) technique on the FIB cross-sections. True shape of extrusions, intrusions and the path of initiated fatigue cracks were assessed in three dimensions by serial FIB cross-sectioning (FIB tomography). Advantageous potential of FIB technique and its other possible utilization in fatigue crack initiation studies in polycrystals are highlighted.

Keywords in Czech

fokusovaný iontový svazek, iniciace únavové trhliny, extruze, intruze

Keywords in English

focused ion beam, fatigue crack initiation, extrusion, intrusion

RIV year

2010

Released

09.08.2010

ISSN

1742-6588

Journal

Journal of Physics: Conference Series

Volume

240

Number

1

Pages from–to

1–4

Pages count

4

BIBTEX


@article{BUT49784,
  author="Jiří {Man} and Anja {Weidner} and Ivo {Kuběna} and Tomáš {Vystavěl} and Werner {Skrotzki} and Jaroslav {Polák},
  title="Application of FIB technique to study of early fatigue damage in polycrystals",
  journal="Journal of Physics: Conference Series",
  year="2010",
  volume="240",
  number="1",
  month="August",
  pages="1--4",
  issn="1742-6588"
}