Publication detail

Fatigue Crack Initiation and Propagation in Coated and Uncoated Inconel 713LC at 800 degC

SMÉKALOVÁ, J. POSPÍŠILOVÁ, S. OBRTLÍK, K. JULIŠ, M. PODRÁBSKÝ, T.

Original Title

Type

journal article - other

Language

English

Original Abstract

Fatigue crack initiation and propagation was studied in cast polycrystalline nickel base superalloy Inconel 713LC in as-received condition and with surface treatment by AlSi protective coating. Cylindrical specimens were cyclically strained under strain control with constant total strain amplitude at 800 ?C. Fatigue fracture surface, specimen surface, and specimen sections were investigated using optical microscopy and scanning electron microscopy. Fatigue crack initiation sites and fatigue crack growth mechanisms were identified and crack propagation rates were obtained base on striation spacing in fracture surfaces. The crack initiation mechanism study revealed reasons for the fatigue life increase in the surface treated material.

Keywords

initiation, fatigue crack propagation, crack propagation rate, fractography, striation

Authors

SMÉKALOVÁ, J.; POSPÍŠILOVÁ, S.; OBRTLÍK, K.; JULIŠ, M.; PODRÁBSKÝ, T.

RIV year

2010

Released

1. 12. 2010

Publisher

VŠB Ostrava

Location

Ostrava

ISBN

1210-0471

Periodical

Transaction of the VŠB-Technical university of Ostrava, Mechanical series

Year of study

LVI

Number

State

Czech Republic

Pages from

155

Pages to

162

Pages count

BibTex

@article{BUT50304,
  author="Jana {Smékalová} and Simona {Hutařová} and Karel {Obrtlík} and Martin {Juliš} and Tomáš {Podrábský}",
  title="Fatigue Crack Initiation and Propagation in Coated and Uncoated Inconel 713LC at 800 degC",
  journal="Transaction of the VŠB-Technical university of Ostrava, Mechanical series",
  year="2010",
  volume="LVI",
  number="2",
  pages="155--162",
  issn="1210-0471"
}