A357 Aluminium Cast Alloys for Extrusion Processes

Manel Campillo; M. Teresa Baile; Sergi Menargues; Enric Martín; Antonio Forn

doi:10.4028/www.scientific.net/SSP.192-193.454

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HomeSolid State PhenomenaSolid State Phenomena Vols. 192-193A357 Aluminium Cast Alloys for Extrusion Processes

A357 Aluminium Cast Alloys for Extrusion Processes

Abstract:

The A357 Al-Si-Mg cast alloy is commonly used for cast production of automotive components in conventional HPDC and in semi-solid processes. The aim of this work is to study the application of A357 cast alloy in thixoextrusion processes. This technology offers new possibilities of application for cast alloys and several advantages in from of conventional processes of hot-extrusion: lower pressure, minor friction forces, higher material fluidity and longer tool life. The thixoextrusion was experimented in a pilot plant, at different speeds and temperatures, with an induction furnace and a 400 Tn press. With ingots of A357 as cast, a tool with a ratio of 8.5 and with temperatures of extrusion around 560 °C, it is possible to obtain extrusion speeds more than 3 m•s-1. In all cases, when the speed of extrusion increases, the press of extrusion decreases. The effect of heat treatments and extrusion speed in the microstructure of the extruded product is evaluated.

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Periodical:

Solid State Phenomena (Volumes 192-193)

Pages:

454-459

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.192-193.454

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Online since:

October 2012

Authors:

Manel Campillo, M. Teresa Baile, Sergi Menargues, Enric Martín, Antonio Forn

Keywords:

A357 Aluminum Alloy, Aluminium Alloy, Semi-Solid Processing, Solid Fraction, Thixoextrusion

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References

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