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Metals 2018, 8(3), 181; https://doi.org/10.3390/met8030181

Microstructure and Properties of Semi-Solid Aluminum Alloys: A Literature Review

1
DIMI—Mechanical and Industrial Engineering Department, Via Branze, 38-25123 Brescia, Italy
2
Department of Materials Science & Engineering, The University of Sheffield, Sir Robert Hadfield Building, Mappin Street, Sheffield S1 3JD, UK
*
Author to whom correspondence should be addressed.
Received: 4 February 2018 / Revised: 6 March 2018 / Accepted: 6 March 2018 / Published: 13 March 2018
(This article belongs to the Special Issue Semi-solid Processing of Alloys and Composites)
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Abstract

Semi-solid processing of aluminum alloys is a well-known manufacturing technique able to combine high production rates with parts quality, resulting in high performance and reasonable component costs. The advantages offered by semi-solid processing are due to the shear thinning behavior of the thixotropic slurries during the mold filling. This is related to the microstructure of these slurries consisting of solid, nondendritic, near-globular primary particles surrounded by a liquid matrix. This paper presents a review on the formation of this nondendritic microstructure, reports on the different proposed mechanisms that might be responsible, and illustrates the relationship between microstructure and properties, in particular, tensility, fatigue, wear, and corrosion resistance. View Full-Text
Keywords: semi-solid; microstructure; mechanical properties; wear; corrosion semi-solid; microstructure; mechanical properties; wear; corrosion
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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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Pola, A.; Tocci, M.; Kapranos, P. Microstructure and Properties of Semi-Solid Aluminum Alloys: A Literature Review. Metals 2018, 8, 181.

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