Precipitate assemblies formed on dislocation loops in aluminium-silver alloys

Abstract

A detailed study of the precipitation of the γ' (AlAg2) phase in undeformed aluminium-silver alloys has been conducted. Several previously unreported features were observed, including the formation of discrete three-dimensional assemblies comprised of 5-7 precipitates on faulted dislocation loops. The precipitates assemblies adopted a morphology approximating a tetrahedral bipyramidal assembly. The bounding defect of the stacking fault was found to control both the nucleation of additional precipitates which was responsible for the formation of the assembly structure and also the growth characteristics of individual precipitates with these assemblies.

Pre-print version; 12 pages, 7 figures

Cited by in corpus (5)

• Silver segregation to θ' (Al2Cu)-Al interfaces in Al-Cu-Ag alloys
• The Crystallography of Aluminum and its Alloys
• The bi-layered precipitate phase zeta in the Al-Ag alloy system
• Precipitate assemblies formed on dislocation loops in aluminium-silver-copper alloys
• Nucleation and growth of the γ' (AlAg2) precipitate in Al-Ag(-Cu) alloys