GRAIN REFINEMENT EFFECT ON FATIGUE PROPERTIES OF AUSTENITIC STAINLESS STEEL WITH DEFORMATION INDUCED MARTENSITE FORMATION

0472587 - ÚFM 2017 RIV CZ eng C - Konferenční příspěvek (zahraniční konf.)
Chlupová, Alice - Man, Jiří - Polák, Jaroslav - Škorík, Viktor - Karjalainen, J.
GRAIN REFINEMENT EFFECT ON FATIGUE PROPERTIES OF AUSTENITIC STAINLESS STEEL WITH DEFORMATION INDUCED MARTENSITE FORMATION.
NANOCON 2014, 6th International Conference. Ostrava: TANGER Ltd, 2014, s. 25-30. ISBN 978-80-87294-53-6.
[International Conference Nanocon 2014 /6./. Brno (CZ), 05.11.2014-07.11.2014]
Grant CEP: GA ČR GA13-32665S
Institucionální podpora: RVO:68081723
Klíčová slova: Fatigue * 301LN austenitic stainless steel * grain refinement
Kód oboru RIV: JL - Únava materiálu a lomová mechanika

Fatigue properties of metastable austenitic 301LN steel with coarse and ultrafine-grained microstructures were investigated at ambient temperature and the effect of grain refinement was evaluated. Two different microstructural states of material were introduced by different annealing conditions during special thermo-mechanical treatment. Fatigue life curves were obtained and compared for both coarse-grained and ultra-fine-grained states of austenitic stainless steel. Magnetic measurements before, during and after cyclic loading were performed to reveal structural changes, i.e. formation of deformation-induced martensite. Relationship between microstructure refinement, phase composition and fatigue properties was discussed.
Trvalý link: http://hdl.handle.net/11104/0269981