Original title: Fatigue properties of nickel-base superalloy inconel 792-5A at 800°C
Authors: Šmíd, Miroslav ; Obrtlík, Karel ; Petrenec, Martin ; Polák, Jaroslav ; Hrbáček, K.
Document type: Papers
Conference/Event: Metal 2010. International Conference on Metallurgy and Materials /19./, Rožnov pod Radhoštěm (CZ), 2010-05-18 / 2010-05-20
Year: 2010
Language: eng
Abstract: Smooth specimens were cyclically strained under strain control with constant strain amplitude and constant strain rate. Low cycle fatigue tests were conducted in servo-hydraulic pulsator MTS equipped with a three zone resistance furnace at temperature 800°C in air. Fracture surface was studied in SEM after fatigue test termination. Selected specimens were used to prepare foils for the transmission electron microscope (TEM) observation of microstructure and dislocation arrangement. They were used to obtain cyclic hardening/softening curves, cyclic stress-strain curve and fatigue life curves in the representation of stress amplitude, total strain amplitude and plastic strain amplitude versus number of cycles to fracture. Experimental points can be approximated with the Manson-Coffin law and the Basquin law. Fracture surface examinations revealed fatigue crack initiation sites.
Keywords: dislocation structure; fatigue life curves; high temperatures; Inconel 792-5A; low cycle fatigue
Project no.: CEZ:AV0Z20410507 (CEP), GA106/08/1631 (CEP)
Funding provider: GA ČR
Host item entry: Metal 2010 - 19th international conference on metallurgy and materials, ISBN 978-80-87294-15-4

Institution: Institute of Physics of Materials AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0193237

Permalink: http://www.nusl.cz/ntk/nusl-42387


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 Record created 2011-07-04, last modified 2024-01-26


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