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The effect of Lüders’ flow on brittle fracture initiation in pearlitic steel
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SYSNO ASEP 0099523 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Ostatní články Title The effect of Lüders’ flow on brittle fracture initiation in pearlitic steel Title Vliv Lüdersovy deformace na iniciaci křehkého lomu v perlitických ocelí Author(s) Dlouhý, Ivo (UFM-A) RID, ORCID
Jurášek, L. (CZ)
Holzmann, Miloslav (UFM-A)Source Title Materials Science Forum - ISSN 0255-5476
Roč. 567-568, - (2008), s. 413-416Number of pages 4 s. Action MSMF /5./ Event date 27.06.2007-29.06.2007 VEvent location Brno Country CZ - Czech Republic Event type WRD Language eng - English Country CH - Switzerland Keywords cleavage fracture ; Lüders’ flow ; brittle fracture initiation Subject RIV JL - Materials Fatigue, Friction Mechanics R&D Projects IAA200410502 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) 1QS200410502 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z20410507 - UFM-A (2005-2011) Annotation In pearlitic steels the fracture initiation of pre-cracked specimens is strongly affected by Lüders’ flow and higher strength properties. There is a gap in fracture toughness data of pre-cracked Charpy (PC) and compact tension (CT) specimens between 60 and 90 MPam1/2 due to plastic hinge formation. The distribution of maximum principal stress ahead of the crack tip in PC specimen loaded into fully plastic regime was found to be identical with that of reference stress-strain field in plane-strain SSY condition. 3D FEM simulations have also shown that there is no constraint loss in PC specimens Workplace Institute of Physics of Materials Contact Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Year of Publishing 2008
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