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      Microstructure and Properties of Pearlitic Steel during Cold Wire Drawing: A Residual Stress Perspective* Translated title: Mikrostruktur und Eigenschaften von perlitischem Stahl beim Drahtziehen aus dem Blickwinkel der Eigenspannungen

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          Abstract

          The residual stress evolution during cold drawing of pearlitic steel wire was followed over a broad strain range by diffraction techniques. The present work discusses possible links between microstructural changes induced by severe deformation and their “footprints” left in the residual stresses on different – macro, micro and nano – scale levels. Energy dispersive synchrotron diffraction revealed a significant divergence in the grain microstress evolution among differently oriented ferrite grains in the high deformation regime beyond an accumulated true strain of about ∊ t ≥ 2.3. A possible physical reason for the observed divergence is discussed in terms of a distinct microstructure development in this stage of the cold wire drawing.

          Kurzfassung

          Die Eigenspannungsentwicklung beim Kaltziehen von perlitischem Stahldraht wurde mit Hilfe von Röntgenbeugung über ein breites Dehnungsintervall verfolgt. Die vorliegende Arbeit diskutiert mögliche Verbindungen zwischen den bei sehr hohen Verformungen auftretenden Mikrostrukturveränderungen und ihren „Fußabdrücken“ in den Eigenspannungen auf den unterschiedlichen – makro-, mikro- und nanoskopischen – Längenskalen. Energiedispersive Beugung von Synchrotronstrahlung zeigte eine starke Divergenz der Mikrorestspannungen unter den verschieden orientierten Ferritkorngruppen im Bereich hoher Verformungen oberhalb von ∊ t ≥ 2.3. Eine mögliche physikalische Ursache für diese Divergenz wird auf der Ebene der Mikrostrukturentwicklung in diesem Stadium des Kaltziehens besprochen.

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          Most cited references 39

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          Mechanical metallurgy

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            The materials science synchrotron beamline EDDI for energy-dispersive diffraction analysis

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              The mechanism of formation of nanostructure and dissolution of cementite in a pearlitic steel during high pressure torsion

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                Author and article information

                Journal
                htme
                HTM Journal of Heat Treatment and Materials
                Carl Hanser Verlag
                1867-2493
                2194-1831
                30 April 2014
                : 69
                : 2
                : 97-105
                Affiliations
                1 Catholic University of Leuven, Department of Metallurgy and Materials Engineering, Kasteelpark Arenberg 44, B-3001 Heverlee (Leuven), Belgium
                Author notes
                2 marc.seefeldt@ 123456mtm.kuleuven.be (Corresponding author/Kontakt)
                [*]

                Enhanced contribution based upon a presentation at the International Conference on Residual Stresses ICRS9, October 7–9, 2012, in Garmisch-Partenkirchen, Germany

                Article
                HT110217
                10.3139/105.110217
                © 2014, Carl Hanser Verlag, München
                Page count
                References: 40, Pages: 9
                Product
                Self URI (journal page): http://www.hanser-elibrary.com/loi/htme
                Categories
                Fachbeiträge/Technical Contributions

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