Paper Titles
The Grain Structures in some 5000 Series Aluminium Alloys after Asymmetric Rolling and Annealing
p.161
The Role of Copper in the Precipitation Kinetics of 6000 Series Al Alloys
p.169
Confirming Computer Calculations of Phase Stability with the Experimental Observations in Automotive Alloy AA6111
p.177
Modeling the Role of Microstructure on Shear Instability with Reference to the Formability of Automotive Aluminium Alloys
p.183
Nucleation-Mediated Structural Refinement and Aluminium Alloy Design
p.191
Vacancy-Solute Interactions in Al-Cu-Mg
p.197
Effect of Trace Addition of Sn in Al-Cu Alloy
p.203
Low Temperature Thermal Stability of Quaternary Al-Li-Cu-Mg Alloys
p.209
Improvement of Bake-Hardening Response of Al-Mg-Cu Alloys by Means of Nanocluster Assist Processing (NCAP) Technique
p.215

Nucleation-Mediated Structural Refinement and Aluminium Alloy Design

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Abstract:

Regardless of whether it is cast microstructure, the grain structure that is the product of thermomechanical processing or the nanoscale dispersions of strengthening second-phase particles, it is inescapable that the structural scale that controls mechanical properties in Al alloys is determined primarily by processes of nucleation during either solidification, recrystallisation or solid-state phase transformation. In those advanced alloys with bulk amorphous or nanocrystalline structure, production of an amorphous precursor is reliant on initial suppression of the nucleation of crystallisation, and subsequent controlled nucleation of dispersed nanocrystals within amorphous matrix. The processes of nucleation that control structural scale in modern Al alloys are briefly reviewed, with a focus on potential for further structural refinement and advances in properties.

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Periodical:

Materials Science Forum (Volumes 519-521)

Pages:

191-196

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.519-521.191

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Online since:

July 2006

Authors:

Barry C. Muddle, Jian Feng Nie

Keywords:

Alloy Design, Dispersion Strengthening, Grain Size, Heterogeneous Nucleation, Precipitation Strengthening, Wrought Aluminium Alloys

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© 2006 Trans Tech Publications Ltd. All Rights Reserved

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