Detail publikace

Stage I fatigue cracking in MAR-M 247 superalloy at elevated temperatures

ŠMÍD, M. HUTAŘ, P. HORNÍK, V. HRBÁČEK, K. KUNZ, L.

Originální název

Stage I fatigue cracking in MAR-M 247 superalloy at elevated temperatures

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

Nickel base superalloys exhibit fatigue fracture behavior with features of brittle-like cleavage cracking under high cycle fatigue loading at temperatures up to approximately 800 °C. This specific fracture behavior was already documented in several studies, but a possible mechanism of fatigue crack propagation under this mode has not been made completely clear yet. The aim of this paper is to put more light on the phenomenon by using advanced electron microscopy techniques like electron back-scattered diffraction (EBSD) and focused ion beam (FIB) sectioning. Fractured specimens after high cycle fatigue tests were thoroughly examined with the aim to localize the fatigue crack initiation sites and accompanying features of the fatigue crack propagation. Several specimens were cross-sectioned in order to characterize active slip systems, cyclic plastic deformation localization and fatigue crack propagation. Dislocation structures were studied by transmission electron microscopy (TEM).

Klíčová slova

Superalloy; High cycle fatigue; Elevated temperature; MAR-M 247; Fatigue crack initiation

Autoři

ŠMÍD, M.; HUTAŘ, P.; HORNÍK, V.; HRBÁČEK, K.; KUNZ, L.

Vydáno

21. 7. 2016

Nakladatel

Elsevier

Místo

Catania, Italy

ISSN

2452-3216

Periodikum

Procedia Structural Integrity

Ročník

2

Číslo

1

Stát

Italská republika

Strany od

3018

Strany do

3025

Strany počet

8

URL

http://www.sciencedirect.com/science/article/pii/S2452321616303961

Plný text v Digitální knihovně

http://hdl.handle.net/11012/203170

BibTex

@article{BUT127554,
  author="Miroslav {Šmíd} and Pavel {Hutař} and Vít {Horník} and Karel {Hrbáček} and Ludvík {Kunz}",
  title="Stage I fatigue cracking in MAR-M 247 superalloy at elevated temperatures",
  journal="Procedia Structural Integrity",
  year="2016",
  volume="2",
  number="1",
  pages="3018--3025",
  doi="10.1016/j.prostr.2016.06.378",
  issn="2452-3216",
  url="http://www.sciencedirect.com/science/article/pii/S2452321616303961"
}