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Precipitation Processes in Age-Hardenable Aluminium Alloys

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Advanced Light Alloys and Composites

Part of the book series: NATO ASI Series ((ASHT,volume 59))

Abstract

Different transformation paths leading to the precipitation of the hardening phase are discussed in two important age-hardenable aluminium alloy systems, the Al-Li and the Al-Zn-Mg alloys. In Al-Li alloys the precipitation of the Ll2 ordered, δ’ (A13Li) particles may progress through a variety of transformation stages, including short- and long-range ordering, and decomposition. Both ordering and decomposition may take place by nucleation and growth or by spinodal mechanism, increasing thereby the number of the possible combinations of consecutive transformation steps. The often returning question of the existence of GP zones in Al-Li alloys is also discussed. In Al-Zn-Mg alloys the role of GP zones and of vacancy rich clusters in the nucleation of the η’ phase, as well as the reversion of GP zones is considered.

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Author information

Authors and Affiliations

  1. Department of General Physics, Eötvös University, Budapest, H-1088, Budapest, Múzeum krt. 6-8, Hungary

    J. Lendvai

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  1. J. Lendvai
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Editor information

Editors and Affiliations

  1. Institute of Metallurgy and Materials Science, Cracow, Poland

    R. Ciach

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© 1998 Springer Science+Business Media Dordrecht

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Lendvai, J. (1998). Precipitation Processes in Age-Hardenable Aluminium Alloys. In: Ciach, R. (eds) Advanced Light Alloys and Composites. NATO ASI Series, vol 59. Springer, Dordrecht. https://doi.org/10.1007/978-94-015-9068-6_39

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  • DOI: https://doi.org/10.1007/978-94-015-9068-6_39

  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-90-481-5087-8

  • Online ISBN: 978-94-015-9068-6

  • eBook Packages: Springer Book Archive

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