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In-situ Observation of Austenite Grain Growth in Plain Carbon Steels by Means of High-temperature Laser Scanning Confocal Microscopy

In-situ Beobachtung des Austenitkornwachstums in unlegierten Stählen mittels Hochtemperatur-Laser-Scanning-Konfokal-Mikroskopie

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Abstract

Austenite grain growth and austenite grain size play an important role for casting, rolling, and annealing processes. High-temperature laser scanning confocal microscopy (HT-LSCM) is an effective method to directly observe austenite grain growth. The present paper describes the experimental setup and the grain size analysis. Finally, results for the isothermal annealing of three different plain carbon steels at 950, 1050, 1150, and 1250 °C are briefly discussed.

Zusammenfassung

Das Wachstum und die Größe von Austenitkörnern sind wesentliche Parameter für Gieß-, Walz und Wärmebehandlungsprozesse. Die Hochtemperatur–Laser-Scanning-Konfokal-Mikroskopie ist eine effektive Methode zur Beobachtung des Kornwachstums. Die vorliegende Veröffentlichung beschreibt den Versuchsaufbau, die Auswertemethoden und abschließend die Ergebnisse für isotherme Halteversuche an drei Kohlenstoffstählen bei 950, 1050, 1150 und 1250 °C.

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Acknowledgements

Financial support by the Austrian Federal Government (in particular by the Bundesministerium für Verkehr, Innovation und Technologie and Bundesministerium für Wissenschaft, Forschung und Wirtschaft) represented by Österreichische Forschungsförderungsgesellschaft mbH and the Styrian and the Tyrolean Provincial Governments, represented by Steirische Wirtschaftsförderungsgesellschaft mbH and Standortagentur Tirol, within the framework of the COMET Funding Programme is gratefully acknowledged.

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  1. Chair of Ferrous Metallurgy, Montanuniversitaet Leoben, Leoben, Austria

    Nora Fuchs, Pawel Krajewski &  Christian Bernhard

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  1. Nora Fuchs
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  2. Pawel Krajewski
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  3. Christian Bernhard
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Correspondence to Christian Bernhard.

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Fuchs, N., Krajewski, P. & Bernhard, C. In-situ Observation of Austenite Grain Growth in Plain Carbon Steels by Means of High-temperature Laser Scanning Confocal Microscopy. Berg Huettenmaenn Monatsh 160, 214–220 (2015). https://doi.org/10.1007/s00501-015-0356-3

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