Original title: Fatigue strength of wheathering steel ATMOFIX 52A
Authors: Kunz, Ludvík ; Vlk, M. ; Zavadilová, Petra ; Klusák, Jan ; Navrátilová, L.
Document type: Papers
Conference/Event: Applied Mechanics 2011, Velké Bílovice (CZ), 2011-04-18 / 2011-04-20
Year: 2011
Language: eng
Abstract: Deterioration of fatigue properties of weathering steels is a serious problem of operating life of engineering components subjected to corrosion and cyclic loads. There are two possible mechanisms of damage, which are discussed in literature. There is an effect of surface roughening, which develops during corrosion, and an effect of corrosion cracks, which can influence the fatigue crack initiation. The paper contains results of an experimental determination of fatigue life of ATMOFIX 52A grade steel with a corroded surface and comparison with the fatigue strength of basic smooth material. The notch effect of corrosion dimples, which initiated fatigue cracks, was determined on the basis of fractographic observation and numerical evaluation of stress concentration. It has been found that the reduction of the fatigue life can be quantitatively well predicted by means of the fatigue notch effect of corrosion dimples. No risky corrosion cracks were found in the studied corroded material
Keywords: ATMOFIX; fatigue; weathering steel
Project no.: CEZ:AV0Z20410507 (CEP)
Host item entry: Applied Mechanics 2011 - Conference Proceedings, ISBN 978-80-87434-03-1

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/11104/0206669

Permalink: http://www.nusl.cz/ntk/nusl-85973


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