Název: MICROSTRUCTURAL INVESTIGATION AND MECHANICAL TESTING OF AN ULTRAFINE-GRAINED AUSTENITIC STAINLESS STEEL
Autoři: Chlupová, Alice ; Man, Jiří ; Polák, Jaroslav ; Karjalainen, L. P.
Typ dokumentu: Příspěvky z konference
Konference/Akce: NANOCON 2013. International Conference /5./, Brno (CZ), 2013-10-16 / 2013-10-18
Rok: 2014
Jazyk: eng
Abstrakt: Special thermomechanical treatment based on high degree deformation followed by reversion annealing was applied to 301LN austenitic stainless steel to achieve ultrafine-grained (UFG) structure with considerably enhanced mechanical properties. Two different conditions of the thermomechanical treatment were adopted and resulting microstructures with different grain sizes were characterised by optical and high resolution scanning electron microscopy (FEG SEM). Hardness measurements and tensile tests were performed to characterize mechanical properties. To reveal structural changes induced during thermomechanical treatment and during tensile tests a magnetic induction method was additionally applied. Experimental study validated the ability of the treatment to produce an austenitic stainless steel with the grain size of about 1.4 mu m which exhibits tensile strength of around 1000 MPa while ductility remains close to 60 %. The results obtained for both thermomechanical conditions are compared and the relationship between microstructure refinement, phase content and mechanical properties is discussed.
Klíčová slova: austenitic steel; behavior mechanical properties; mechanical properties; thermomechanical heat treatment; ultra-fine grained microstructure
Zdrojový dokument: NANOCON 2013, 5TH INTERNATIONAL CONFERENCE, ISBN 978-80-87294-47-5

Instituce: Ústav fyziky materiálů AV ČR (web)
Informace o dostupnosti dokumentu: Dokument je dostupný v příslušném ústavu Akademie věd ČR.
Původní záznam: http://hdl.handle.net/11104/0301376

Trvalý odkaz NUŠL: http://www.nusl.cz/ntk/nusl-407913


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Věda a výzkum > AV ČR > Ústav fyziky materiálů
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