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The Effect of Friction Stir Processing on Bifilms and Structural Quality in A356 Alloy Castings

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Shape Casting

Part of the book series: The Minerals, Metals & Materials Series ((MMMS))

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Abstract

The effect of friction stir processing (FSP) on the structural quality was tested in two A356 alloy ingots: conventional and continuously cast. Reduced pressure tests and microstructural analysis showed that the initial quality and microstructure in the two ingots were significantly different. The structural quality, as measured by the quality index QT, of the conventional ingot improved with each FSP pass, whereas that of the continuously cast ingot went up after the first pass and remained essentially constant with additional passes. The contribution of microstructural refinement as a result of FSP on the improvement of structural quality remains unknown. However, the largest contribution comes from bifilms breaking up during the friction stir process.

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Author information

Authors and Affiliations

  1. School of Engineering, University of North Florida, Jacksonville, FL, 32224, USA

    Nelson Netto, Paul D. Eason & Boğaçhan Őndeş

  2. Metallurgical and Materials Engineering Department, Istanbul University-Cerrahpaşa, Istanbul, Turkey

    Eray Erzi

  3. University of North Florida, Jacksonville, FL, 32224, USA

    Murat Tiryakioğlu

Authors
  1. Nelson Netto
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  2. Murat Tiryakioğlu
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  3. Paul D. Eason
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  4. Boğaçhan Őndeş
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  5. Eray Erzi
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Corresponding author

Correspondence to Murat Tiryakioğlu .

Editor information

Editors and Affiliations

  1. University of North Florida, Jacksonville, FL, USA

    Murat Tiryakioğlu

  2. University of Birmingham, Birmingham, UK

    William Griffiths

  3. Cranfield University, Cranfield, UK

    Mark Jolly

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© 2019 The Minerals, Metals & Materials Society

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Netto, N., Tiryakioğlu, M., Eason, P.D., Őndeş, B., Erzi, E. (2019). The Effect of Friction Stir Processing on Bifilms and Structural Quality in A356 Alloy Castings. In: Tiryakioğlu, M., Griffiths, W., Jolly, M. (eds) Shape Casting. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-030-06034-3_31

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