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A Comparison between Anodizing and EBSD Techniques for Primary Particle Size Measurement

1
School of Mechanical Engineering, The University of Adelaide, Adelaide, SA 5005, Australia
2
Department of Chemical and Materials Engineering, University of Alberta, Edmonton, AB T6G 1H9, Canada
3
Consolidated Metco, Vancouver, WA 98661, USA
4
Consultant—Struers Inc., Wadsworth, IL 60083, USA
*
Author to whom correspondence should be addressed.
Metals 2019, 9(5), 488; https://doi.org/10.3390/met9050488
Received: 26 March 2019 / Revised: 22 April 2019 / Accepted: 24 April 2019 / Published: 27 April 2019
(This article belongs to the Special Issue Semi-Solid Processing of Alloys and Composites)
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Abstract

Proper understanding and knowledge of primary particle or grain size is of paramount importance in manufacturing processes as it directly affects various properties including mechanical behavior. Application of optical microscopy coupled with etching techniques has been used conventionally and in conjunction with color metallography (polarized microscopy) has been the preferred method for grain size measurement. An advanced technique as an alternative to light microscopy is using electron backscatter diffraction (EBSD). A comparison is made between these two techniques using Al-7Si alloy produced with various casting techniques to highlight the cost and time of the sample preparation and analysis for both techniques. Results showed that color metallography is certainly a faster technique with great accuracy and a much cheaper alternative in comparison with EBSD. View Full-Text
Keywords: polarized light microscopy; anodic etching; EBSD; grain; globule; Al-Si alloy; semi-solid metal processing; EMS; thixocasting polarized light microscopy; anodic etching; EBSD; grain; globule; Al-Si alloy; semi-solid metal processing; EMS; thixocasting
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Nafisi, S.; Roccisano, A.; Ghomashchi, R.; Vander Voort, G. A Comparison between Anodizing and EBSD Techniques for Primary Particle Size Measurement. Metals 2019, 9, 488.

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