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      Effect of the die approach zone shape on the transition of retained austenite and the mechanical properties of TRIP steel wires Translated title: Auswirkungen der Düsengeometrie auf die Umwandlung von Restaustenit und die mechanischen Eigenschaften von TRIP-Stahldrähten

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      1 , * , , 1
      Materials Testing
      Carl Hanser Verlag

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          Abstract

          One of the main factors influencing the transition of retained austenite into martensite in TRIP structure steels during drawing process is the strain intensity. In drawing processes, it occurs high strain inhomogeneity caused by the conical shape of the die approach section, as well as by the friction occurring between the tool and the material. The occurring redundant strain causes high inhomogeneity in the distribution of mechanical properties on the cross-section of wire being drawn. One of the directions aiming at enhancing the homogeneity of the drawn wire properties is to change the shape of the die working section. The paper presents the results of the investigation of the effect of the quantity of retained austenite in TRIP-type steel wires with a carbon content of 0.29 wt.-% C drawn using conical (conventional), concave and convex dies on the mechanical properties of drawn wires.

          Kurzfassung

          Ein Hauptfaktor der Umwandlung von Restaustenit in Martensit in TRIP-Strukturstählen während des Ziehprozesses ist die Dehnungsintensität. Im Ziehprozess tritt eine große Dehnungsinhomogenität auf, die von der konischen Form des Eintrittsbereiches der Düse sowie infolge der Reibung zwischen dem Werkzeug und dem Werkstoff verursacht wird. Die auftretende redundante Dehnung verursacht eine große Inhomogenität in der Verteilung der mechanischen Eigenschaften innerhalb des Querschnittes des gezogenen Drahtes. Eine der Richtungen, um die Homogenität der Eigenschaften des gezogenen Drahtes zu verbessern, besteht darin, die Form des Arbeitsteiles zu verändern. Der vorliegende Beitrag präsentiert die Ergebnisse einer Untersuchung des Effekts des Restaustenits in TRIP-Stahldrähten mit einem Kohlenstoffgehalt von 0,29 wt.-%, die mittels konischen (konventionellen), konkaven und konvexen Formen gezogen wurden, auf die mechanischen Eigenschaften der gezogenen Drähte.

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          Most cited references4

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          Behavior of residual stress and drawing stress in conical-type die and circle-type die drawing by FEM simulation and experiment

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            Analysis of the influence of drawing speed on the amount of retained austenite in TRIP steel wires

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              Effect of die approach geometry and bearing length on residual stress after bar drawing

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                Author and article information

                Journal
                mp
                Materials Testing
                Carl Hanser Verlag
                0025-5300
                2195-8572
                4 April 2016
                : 58
                : 4
                : 302-305
                Affiliations
                1 Czestochowa, Poland
                Author notes
                [* ] Correspondence Address, Assoc. Professor Sylwia Wiewiorowska, Institute of Plastic Working and Safety Engineering, Faculty of Production Engineering and Materials Technology, Czestochowa University of Technology, Al. Armii Krajowej 19, 42–200 Czestochowa, Poland. E-mail: wiewior@ 123456wip.pcz.pl

                Associated Prof. Dr. Sylwia Wiewiórowska is Associated Professor at Czestochowa University of Technology, Poland. Since 2008, she is the Head of the Drawing and Metal Products Unit in the Institute of Plastic Working and Safety Engineering of Czestochowa University of Technology.

                Prof. Zbigniew Muskalski is Professor at Czestochowa University of Technology, Poland. He is a distinguished specialist involved in the theoretical and experimental study of the processes of drawing wires of steel of both typical ferritic-pearlitic and multiphase structures.

                Article
                MP110852
                10.3139/120.110852
                a1fa521f-1de7-4fbf-9961-7aa0dc4b4bab
                © 2016, Carl Hanser Verlag, München
                History
                Page count
                References: 6, Pages: 4
                Categories
                Fachbeiträge/Technical Contributions

                Materials technology,Materials characterization,Materials science
                Materials technology, Materials characterization, Materials science

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