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Short crack growth in ferritic-pearlitic-bainitc steel
- 1.0332453 - ÚFM 2010 CZ eng K - Conference Paper (Czech conference)
Polák, Jaroslav
Short crack growth in ferritic-pearlitic-bainitc steel.
[Růst krátkých trhlin ve feriticko-perliticko-bainitické oceli.]
Proceedings of Engineering Mechanics 2009. Praha: Institute of Theoretical and Applied Mechanics, Academy of Sciences of the Czech Republic, 2009 - (Náprstek, J.; Fischer, C.), s. 1025-1032. ISBN 978-80-86246-35-2.
[Engineering mechanics 2009. Svratka (CZ), 11.05.2009-14.05.2009]
R&D Projects: GA ČR GA101/07/1500
Institutional research plan: CEZ:AV0Z20410507
Keywords : short crack * crack growth * steel
Subject RIV: JL - Materials Fatigue, Friction Mechanics
The initiation and the growth of short cracks were studied in ferritic-pearlitic-bainitic steel. Short cracks initiate preferably in persistent slip markings in areas of proeutectoid ferrite. The kinetics of short crack growth is characterized by exponential growth. Crack growth coefficient was found to be a function of plastic strain amplitude. The comparison of the short crack growth kinetics with Coffin-Manson law allows determining the parameters of the short crack growth law from the low cycle fatigue experiments
Byla studována iniciace a růst krátkých trhlin ve ferritcko-perliticko-bainitické oceli. Kinetika růstu trhlin je charaktrizována exponenciálním růstem. Byl určen koeficient růstu trhlin v závislosti na amplitudě plastické deformace.
Permanent Link: http://hdl.handle.net/11104/0177708
Number of the records: 1