LOW-CYCLE FATIGUE OF STEEL AISI 316 AFTER ECAP

1 KANDER Ladislav
Co-authors:
2 GREGER Miroslav
Institutions:
1 Research and Development, Pohraniční 693/31, CZ 706 02 Ostrava - Vítkovice, Czech Republic, EU, ladislav.kander@mmvyzkum.cz
2 VSB - Technical University of Ostrava, Faculty of Metallurgy and Materials Engineering, Ostrava-Poruba, Czech Republic, EU, miroslav.greger@vsb.cz
Conference:
30th Anniversary International Conference on Metallurgy and Materials, Brno, Czech Republic, EU, May 26 - 28, 2021
Proceedings:
Proceedings 30th Anniversary International Conference on Metallurgy and Materials
Pages:
342-347
ISBN:
978-80-87294-99-4
ISSN:
2694-9296
Published:
15th September 2021
Proceedings of the conference have already been published in Scopus and we are waiting for evaluation and potential indexing in Web of Science.
Metrics:
413 views / 198 downloads
Abstract

Main aim of this paper is to describe the plastic deformation executed by ECAP during low cycle fatigue of steel AISI 316. Among others, main attention was fixed on mechanical properties after this treatment. Experiments were planned and realised at temperature ranging from room temperature up to 280 °C. After deformation the structure was investigated to evaluate accumulation of deformation, deformation temperature as well as above-mentioned final properties. Accumulated true (logarithmic) deformation varied from the value 2 to 8. Structures were investigated via scanning electron microscope JEOL JEM 2100. Mechanical properties were evaluated by conventional tensile test and penetration test. Selected samples were subjected to low-cycle fatigue. Statistic evaluation of angular disorientation and grain/sub-grain size was also carried out with use of electron diffraction (EBSD) in combination with scanning electron microscope FEG SEM Philips. The ECAP was applied on austenitic steel AISI 316.

Keywords: Mechanical properties, low cycle fatigue, AISI 316, ECAP

© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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