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Influence Of The Solidification Parameters On Dendritic Microstructures In Unsteady-State Directionally Solidified Of Lead–Antimony Alloy

Author

Listed:
  • M. ŞAHIN

    (Department of Physics, Faculty of Arts and Sciences, Niğde University, Niğde, Turkey)

  • E. ÇADIRLI

    (Department of Physics, Faculty of Arts and Sciences, Niğde University, Niğde, Turkey)

  • H. KAYA

    (Department of Science Education, Faculty of Education, Erciyes University, Kayseri, Turkey)

Abstract

Pb-9.3wt.%Sb alloy was directionally solidified upwards under argon atmosphere under the two conditions; with different temperature gradients, (G = 0.93–3.67 K/mm) at a constant growth rate (V = 17.50 μm/s) and with different growth rates (V = 8.30–497.00 μm/s) at a constant (G = 3.67 K/mm) in a Bridgman furnace. The dependence of characteristic microstructure parameters such as primary dendrite arm spacing (λ1), secondary dendrite arm spacing (λ2) and dendrite tip radius (R) on the growth rate (V) and the temperature gradient (G) were determined by using a linear regression analysis. A detailed analysis of microstructure were also made and compared with the theoretical models and similar experimental works on dendritic solidification in the literature.

Suggested Citation

  • M. Şahin & E. Çadirli & H. Kaya, 2010. "Influence Of The Solidification Parameters On Dendritic Microstructures In Unsteady-State Directionally Solidified Of Lead–Antimony Alloy," Surface Review and Letters (SRL), World Scientific Publishing Co. Pte. Ltd., vol. 17(05n06), pages 477-486.
    • Handle: RePEc:wsi:srlxxx:v:17:y:2010:i:05n06:n:s0218625x10014326
    DOI: 10.1142/S0218625X10014326
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