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SMÉKALOVÁ, J. POSPÍŠILOVÁ, S. OBRTLÍK, K. JULIŠ, M. PODRÁBSKÝ, T.
Original Title
Fatigue Crack Initiation and Propagation in Coated and Uncoated Inconel 713LC at 800 degC
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
2
State
Czech Republic
Pages from
155
Pages to
162
Pages count
8
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" }