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Ductile damage identification and tensile notch effect for Eurofer97 steel
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SYSNO ASEP 0399630 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Ostatní články Title Ductile damage identification and tensile notch effect for Eurofer97 steel Author(s) Stratil, Luděk (UFM-A) ORCID
Hadraba, Hynek (UFM-A) RID, ORCID
Dlouhý, Ivo (UFM-A) RID, ORCIDNumber of authors 3 Source Title Acta metallurgica slovaca - Conference. - Košice : Hutnická fakulta - Technická univerzita v Košiciach, 2013 - ISSN 1338-1660
Roč. 3, č. 1 (2013), s. 185-190Number of pages 5 s. Publication form Print - P Action FRACTOGRAPHY 2012 Event date 21.10.2012-24.10.2012 VEvent location Stará Lesná Country SK - Slovakia Event type WRD Language eng - English Country SK - Slovakia Keywords Eurofer97 ; notched tensile bars ; voids ; nucleation and growth Subject RIV JG - Metallurgy R&D Projects GAP108/10/0466 GA ČR - Czech Science Foundation (CSF) GD106/09/H035 GA ČR - Czech Science Foundation (CSF) Institutional support UFM-A - RVO:68081723 DOI 10.12776/amsc.v3i0.125 Annotation The effect of stress multiaxiality on void nucleation and growth at ductile fracture was studied for a Eurofer97 steel. To investigate the effect of stress multiaxility and void’s nucleation and growth, the tensile testing of smooth and notched round bars was performed. The fractography and metallography analysis on broken halves of tensile bars together with the image analysis were carried out. The increasing stress multiaxiality in the bars lowers the strain at fracture. The ductile damage of the steel consists from the nucleation of the voids by decohesion mechanisms, their gradual growth and finishes by rapid void coalescence. The increasing stress multiaxiality causes larger growth of voids together with observed restriction of void’s nucleation. Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2014
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