Original title: Effect of plasma sprayed AlSi coating on low cycle fatigue properties of cast superalloy Inconel 738LC
Authors: Obrtlík, Karel ; Pospíšilová, S. ; Juliš, M. ; Čelko, L. ; Podrábský, T.
Document type: Papers
Conference/Event: Metal 2012, Brno (CZ), 2012-05-23 / 2012-05-25
Year: 2012
Language: eng
Abstract: Air plasma spraying was applied to obtain AlSi protective surface coating on cylindrical specimens of cast polycrystalline superalloy Inconel 738LC. Chemical composition of the surface treated layer was studied and the hardness depth profile was measured. Surface treated and untreated specimens were cyclically strained under total strain control at 800 °C in air. Cyclic stress-strain response and fatigue life of both materials were obtained. The coating results in a slight decrease of cyclic stress-strain curve. A detrimental effect of the surface treatment on derived Wöhler curve is documented while Manson-Coffin curves of both materials are almost identical. Specimen section observations and fracture surface examinations help to discuss fatigue behaviour of both materials.
Keywords: AISi plasma coating; cyclic stress-strain curve; fatigue life curves; high temperature fatigue; Inconel 738LC
Project no.: GAP107/11/2065 (CEP)
Funding provider: GA ČR
Host item entry: METAL 2012 Conference Proceedings, ISBN 978-80-87294-31-4

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/11104/0227418

Permalink: http://www.nusl.cz/ntk/nusl-166139


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Research > Institutes ASCR > Institute of Physics of Materials
Conference materials > Papers