Paper Title:
Metastable Phase Formation in Multi-Component Aluminium Alloys
  Abstract

Many Aluminium alloys use the precipitation of metastable phases to generate optimum properties. The effect of including additional structures such as θ’ and GP zones is described in the context of a hierarchy of metastable structures. Extending a Thermodynamic data base that has been designed solely to deal with equilibrium conditions is a vital prerequisite to handling the heattreatment of aluminium alloys. It is then possible to generate TTT and CCT diagrams, using the Johnson-Mehl-Avrami treatment previously applied in to other materials providing provision is made for the presence of supersaturated quenched-in vacancies. Calculations using JMatPro are given for the expected behavior of commercial aluminium alloys of increasing complexity, including AA319, AA6061 and AA7075.

  Info
Periodical
Edited by
J. Čermák and I. Stloukal
Pages
31-40
DOI
10.4028/www.scientific.net/DDF.263.31
Citation
A. P. Miodownik, N. Saunders, J.P. Schille, Z. L. Guo, "Metastable Phase Formation in Multi-Component Aluminium Alloys", Defect and Diffusion Forum, Vol. 263, pp. 31-40, 2007
Online since
March 2007
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Price
$32.00
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