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Dendrite morphology of several steady state unidirectionally solidified iron base alloys

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Abstract

The experimental data are presented of the dendrite morphology of steady state unidirectionally solidified steels. The dendrite arm spacings were correlated with the equation A =KR mGmwhereR is the growth rate and G the temperature gradient. The exponentsm andn for the primary arms are fairly close to the theoretical values (m = -0.25,n = -0.5). For the secondary arms they are about the same (-0.4). The primary arm spacings do not depend much on composition. The secondary arm spacings, however, decrease at fixed carbon content with increasing content of substitutional elements, and they were found to be smaller in a steel freezing as ferrite compared to steels freezing as austenite.

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Authors and Affiliations

  1. Department of Mechanical Design and Production Engineering, Ain-Shams University, Cairo, Egypt

    MOHAMED AHMED TAHA

  2. Mannesmann Forschungsinstitut, 41 Duisburg-Huckingen, Ehinger Str. 200, Germany

    HATTO JACOBI

  3. Nippon Steel, Kimitsu Work, Chiba, Japan

    MASANA IMAGUMBAI

  4. Institut für Theoretische Metallurgie, Technische Universität Clausthal, 3392 Clausthal-Zellerfeld, Agricolastr. 6, Germany

    KLAUS SCHWERDTFEGER

Authors
  1. MOHAMED AHMED TAHA
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  2. HATTO JACOBI
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  3. MASANA IMAGUMBAI
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  4. KLAUS SCHWERDTFEGER
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Additional information

All the authors were with Max-Planck Institut für Eisenforschung, 4 Düsseldorf 1, Max-Planck-Str. 1, Germany, at the time this investigation was carried out.

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TAHA, M.A., JACOBI, H., IMAGUMBAI, M. et al. Dendrite morphology of several steady state unidirectionally solidified iron base alloys. Metall Trans A 13, 2131–2141 (1982). https://doi.org/10.1007/BF02648383

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  • DOI: https://doi.org/10.1007/BF02648383

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