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Unidirectional solidification of Zn-rich Zn−Cu hypoperitectic alloy

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Abstract

Zn-0.7 wt.% Cu-hypoperitectic alloy was prepared in a graphite crucible under a vacuum atmosphere. Unidirectional solidification of the Zn-0.7 wt.% Cu-hypoperitectic alloy was carried out by using a Bridgman-type directional solidification apparatus under two different conditions: (i) with different temperature gradients (G = 3.85–9.95 K/mm) at a constant growth rate (41.63 µm/s) and (ii) with different growth rate ranges (G = 8.33–435.67 µm/s) at a constant temperature gradient (3.85 K/mm). The microstructures of the directionally solidified Zn-0.7 wt.% Cu-hypoperitectic samples were observed to be a cellular structure. From both transverse and longitudinal sections of the samples, cellular spacing (?) and cell-tip radius (R) were measured. The effects of solidification-processing parameters (G and V) on the microstructure parameters (? and R) were obtained by using a linear regression analysis. The present experimental results were also compared with the current theoretical and numerical models and similar previous experimental results.

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Authors and Affiliations

  1. Department of Science Education, Education Faculty, Erciyes University, Kayseri, Turkey

    Hasan Kaya & U. Böyük

  2. Institute of Science and Technology, Department of Physics, Erciyes University, Kayseri, Turkey

    Sevda Engin

  3. Department of Physics, Faculty Arts and Sciences, Nigde University, Nigde, Turkey

    Emin Çadirli

  4. Department of Physics, Faculty Arts and Sciences, Erciyes University, Kayseri, Turkey

    Necmettin Marasli

Authors
  1. Hasan Kaya
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  2. Sevda Engin
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  3. U. Böyük
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  4. Emin Çadirli
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  5. Necmettin Marasli
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Correspondence to Hasan Kaya.

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Kaya, H., Engin, S., Böyük, U. et al. Unidirectional solidification of Zn-rich Zn−Cu hypoperitectic alloy. Journal of Materials Research 24, 3422–3431 (2009). https://doi.org/10.1557/jmr.2009.0415

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  • DOI: https://doi.org/10.1557/jmr.2009.0415

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