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Analysis of on-deposition solidification during the Osprey spray-deposition process

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Abstract

The on-deposition process during spray deposition was studied. The theory of forced convection in the case of laminar flow is applied to evaluate the heat-transfer coefficient between the atomizing gas and the semi-solid/semi-liquid thin film on the surface of the deposit. The cooling rate of the on-deposition process was estimated, based on the heat-flow analysis. The results agree well with experimental observations of the microstructure of spray-deposited aluminium alloy, as well as other similar rapid solidification processes, such as gas atomization of metal powders.

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Authors and Affiliations

  1. Rogers Tool Works, 72757, Rogers, AR, USA

    Z. Fang

  2. Delft University of Technology, Delft, The Netherlands

    J. Duszczyk

  3. Osprey Metals Ltd, Neath, West Glamorgan, UK

    A. Leatham

Authors
  1. Z. Fang
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  2. J. Duszczyk
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  3. A. Leatham
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Fang, Z., Duszczyk, J. & Leatham, A. Analysis of on-deposition solidification during the Osprey spray-deposition process. J Mater Sci 27, 4511–4514 (1992). https://doi.org/10.1007/BF00541587

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  • DOI: https://doi.org/10.1007/BF00541587

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