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Microstructural development in non-oriented lamination steels

Part 1 The nature of ferrite/pearl ite aggregates in continuously cooled low-carbon steels

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Abstract

The microstructures produced during continuous cooling of two particular non-oriented lamination steels have been examined using light microscopy, scanning electron microscopy and transmission electron microscopy. In addition to proeutectoid ferrite and pearlite, cementite was present on ferrite grain boundaries and on proeutectoid ferrite/ pearl ite interfaces. Mechanisms for the formation of these cementite films are presented. The microstructural results demonstrate that ferrite is the “active nucleus” for pearlite in these low-carbon steels. In addition, the data suggest that in addition to branching, the pearlite reaction can be initiated by the nucleation of a series of cementite precipitates on the proeutectoid ferrite/austenite interface.

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Author notes

  1. J. -W. Lee

    Present address: Department of Metallurgical Engineering and Materials Science, Carnegie-Mellon University, 15213, Pennsylvania, USA

Authors and Affiliations

  1. Department of Materials Science and Engineering, The Pennsylvania State University, 16802, Pennsylvania, USA

    J. -W. Lee & P. R. Howell

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  1. J. -W. Lee
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  2. P. R. Howell
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Lee, J.W., Howell, P.R. Microstructural development in non-oriented lamination steels. J Mater Sci 22, 3631–3641 (1987). https://doi.org/10.1007/BF01161471

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  • DOI: https://doi.org/10.1007/BF01161471

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