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Cyclic deformation behaviour and stability of grain-refined 301LN austenitic stainless structure
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SYSNO ASEP 0493642 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Cyclic deformation behaviour and stability of grain-refined 301LN austenitic stainless structure Author(s) Man, Jiří (UFM-A) RID, ORCID
Järvenpää, A. (FI)
Jaskari, M. (FI)
Kuběna, Ivo (UFM-A) RID, ORCID
Fintová, Stanislava (UFM-A) ORCID
Chlupová, Alice (UFM-A) RID, ORCID
Karjalainen, L. P. (FI)
Polák, Jaroslav (UFM-A) RID, ORCIDNumber of authors 8 Article number 06005 Source Title MATEC Web of Conferences, 165. - Poitiers Futuroscope : EDP Sciences, 2018 - ISSN 2261-236X Number of pages 8 s. Publication form Online - E Action FATIGUE 2018 - International Fatigue Congress /12./ Event date 27.05.2018 - 01.06.2018 VEvent location Poitiers Futuroscope Country FR - France Event type WRD Language eng - English Country FR - France Keywords Austenite ; Cold rolling ; Deformation ; Fatigue of materials ; Grain size and shape Subject RIV JL - Materials Fatigue, Friction Mechanics OECD category Audio engineering, reliability analysis R&D Projects GA13-32665S GA ČR - Czech Science Foundation (CSF) Institutional support UFM-A - RVO:68081723 UT WOS 000478990600054 EID SCOPUS 85048135474 DOI 10.1051/matecconf/201816506005 Annotation Low cycle fatigue (LCF) behaviour of metastable austenitic 301LN stainless steel with different grain sizes - coarse-grained (13 μm), fine-grained (1.4 μm) and ultrafine-grained (0.6 μm) - produced by reversion annealing after prior cold rolling was investigated. Fully symmetrical LCF tests with constant total strain amplitudes of 0.5% and 0.6% were performed at room temperature with a low constant strain rate of 2×10-3 s-1. Microstructural changes in different positions within the gauge part of the specimens were examined by optical microscopy (polarized light) and electron backscatter diffraction (EBSD) technique, for quantitative assessment of the volume fraction of deformation induced martensite (DIM) a Feritscope FMP 30 was adopted. The cyclic stress-strain response and specific changes of hysteresis loop shapes in the very early stage of cycling are confronted with the character of DIM formation and its distribution in the whole volume of the material. A possible effect of strain rate (frequency of cycling) on the destabilization of austenitic structure during cyclic straining of materials with different grain sizes is highlighted. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2020
Number of the records: 1