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Extrusion of Aluminium Alloys pp 205–252Cite as

Homogenization and extrusion conditions for specific alloys

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Abstract

The object of this chapter is to consider the conditions required for practical homogenization and its effect on extrusion processing parameters and, where appropriate, investigate how property development is influenced by homogenization. The examples are drawn from more recent work for aluminium alloys in each of the alloy series. In sections 5.1–5.8 we shall, in the main, discuss metallurgy and the homogenization requirements leaving the extrusion considerations for discussion under the heading of ‘limit diagrams’. It is normal to relate alloy extrusion to maximum extrudate speeds but the reader will be aware from the discussion on shape considerations in Chapter 4 that it is, in general, meaningless to suggest a maximum speed without taking into account the extrusion ratio, the shape factor, metallurgical factors (i.e. the retention of the press effect in 6XXX alloys or the structural factors required to produce acceptable fracture toughness in 2XXX or 7XXX alloys) and geometrical specifications of the product. Therefore we shall show these effects by means of limit diagrams and, at the conclusion of that consideration, will be able to grade the alloys in terms of extrudability.

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Authors and Affiliations

  1. Department of Product Design and Manufacture, Bournemouth University, Bournemouth, UK

    Professor Terry Sheppard (D.Sc, Ph.D., F.I.M., C.Eng., F.I.Mech.E.)

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  1. Professor Terry Sheppard
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© 1999 Springer Science+Business Media Dordrecht

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Sheppard, T. (1999). Homogenization and extrusion conditions for specific alloys. In: Extrusion of Aluminium Alloys. Springer, Boston, MA. https://doi.org/10.1007/978-1-4757-3001-2_5

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  • DOI: https://doi.org/10.1007/978-1-4757-3001-2_5

  • Publisher Name: Springer, Boston, MA

  • Print ISBN: 978-1-4419-4728-4

  • Online ISBN: 978-1-4757-3001-2

  • eBook Packages: Springer Book Archive

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