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      Examination of Microstructure and Wear Behaviour of a Roller Material Produced by Centrifugal Casting Translated title: Untersuchung der Mikrostruktur und des Verschleißverhaltens eines im Schleudergussverfahren hergestellten Walzwerkstoffes

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          Abstract

          In this study, the microstructure of a roller material produced by centrifugal casting was characterized and its worn surface was examined after wear test. In the first stage of the study, centrifugal casting was used to produce cast iron based roller material. The cross-section of cast matrix was examined using light and scanning electron microscopy after metallographic preparations. In the second stage, ‘ball-on-disc’ type tribometer was used to investigate the wear behaviour of the cast part under dry sliding condition. In order to observe the effect of loading force, the samples were subjected to 10 N, 30 N and 50 N load and the total sliding distance was selected as 500 m. After wear tests, all the worn surfaces were examined using both light and scanning electron microscopy. It is concluded that (i) the roller had pearlitic cast iron matrix having nodular graphite and eutectic carbide, (ii) worn surfaces exhibited typical abrasive and partial adhesive wear tracks, (iii) as the loading force increased the friction coefficient in addition to weight loss of cast iron matrix increased.

          Kurzfassung

          In der diesem Beitrag zugrunde liegenden Studie wurde das Gefüge eines mittels Schleuderguss hergestellten Walzwerkstoffes charakterisiert und anschließend die verschlissene Oberfläche nach der Verschleißprüfung untersucht. Im ersten Teil der Studie wurde das Schleudergussverfahren angewendet, um den eisenbasierten Walzwerkstoff herzustellen. Die Querschliffe der Gussmatrix wurden mittels Licht- und Rasterelektronenmikroskopie nach entsprechender metallografischer Präparation untersucht. Im zweiten Teil kam ein Stift-Scheibe-Tribometer zum Einsatz, um das Verschleißverhalten des Gussstückes unter Trockengleitbedingungen zu untersuchen. Um den Einfluss der Belastungskraft zu bestimmen, wurden die Proben einer Kraft von 10N, 30N und 50N unterzogen und als totale Gleitdistanz wurde 500m gewählt. Nach den Verschließversuchen wurden alle so beanspruchten Oberflächen ebenfalls mittels Licht- und Rasterelektronenmikroskopie untersucht. Es stellte sich heraus, dass (i) der Walzwerkstoff eine perlitische Gusseisenmatrix mit Kugelgraphit und eutektischen Carbiden aufweist, (ii) die Verschleißoberflächen die typischen abrasiven und partiell adhäsiven Verschleißspuren aufweisen, (iii) mit zunehmender Belastungskraft der Reibungskoeffizient und auch der Gewichtsverlust der Gusseisenmatrix ansteigt.

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          Most cited references7

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          Martensite and Bainite in Steels : Transformation Mechanism & Mechanical Properties

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            Wear of hot rolling mill rolls: an overview

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              Correlation of microstructure and thermal fatigue property of three work rolls

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                Author and article information

                Journal
                mp
                Materials Testing
                Carl Hanser Verlag
                0025-5300
                2195-8572
                2012
                : 54
                : 6
                : 421-426
                Affiliations
                1 Istanbul
                2 Kocaeli, Turkey
                Author notes

                Dipl.-Ing. Onur Birbaşar was born in 1979 and graduated from Kocaeli University, Department of Metallurgical and Materials Engineering. He received his MSc degree from Kocaeli University, Department of Metallurgical and Materials Engineering, Turkey. He is working as an engineer in Assan Alüminyum and he continues on his doctoral studies on roller materials.

                Dr. Ş. Hakan Atapek was born in 1979 and graduated from Kocaeli University, Department of Metallurgical and Materials Engineering, Turkey. He received his MSc and PhD degrees from Kocaeli University, Department of Metallurgical and Materials Engineering, Turkey. He is working as assistant professor at Kocaeli University, Department of Metallurgical and Materials Engineering. His interests are physical metallurgy of steels, armor steels, materials characterization and fractography.

                Dr. Enbiya Türedi was born in 1979 and graduated from Kocaeli University, Department of Metallurgical and Materials Engineering, Turkey. He received his MSc and PhD degrees from Kocaeli University Department of Metallurgical and Materials Engineering, Turkey, and University of Stuttgart, Institute for Manufacturing Technologies of Ceramic Components and Composites, Germany, respectively. He is working as assistant professor at Kocaeli University, Department of Metallurgical and Materials Engineering. His interests are carbon materials, composites, ceramics as well as their characterization and wear behaviours.

                Dr. Muzaffer Zeren was born in 1959 and graduated from Istanbul Technical University, Department of Metallurgical and Materials Engineering, Turkey. He received his MSc and PhD degrees from Istanbul Technical University-Department of Metallurgical and Materials Engineering and Kocaeli University, Department of Metallurgical and Materials Engineering, respectively. He is working as professor at Kocaeli University, Department of Metallurgical and Materials Engineering and is also head of the department. His interests are non-ferrous materials, cast alloys, mechanical behaviour of materials.

                Article
                MP110347
                10.3139/120.110347
                0f358883-e775-46da-9ecb-2f4643d07cbc
                © 2012, Carl Hanser Verlag, München
                History
                Page count
                References: 12, Pages: 6
                Categories
                Fachbeiträge/Technical Contributions

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

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