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Aluminium alloys thixoextrusion

Total activity: 2
Type of activity
Competitive project
Funding entity
Ministerio de Ciencia e Innovación (MICINN)
Funding entity code
60.500,00 €
Start date
End date
The aim of the project is to contribute to development of extrusion processes of aluminium alloys in
semisolid state (Thixoextrusion). In order to perform the extrusion in semisolid state, different ingots with
globular microstructure will be used. The project involves both, the production of ingots with globular
alpha phase and the establishment of the optimum conditions to carry out the thixoextrusion.
Currently, industrial processes of semi-solid metal forming (SSM) are limited to the conformation by
Rheocasting techniques, which involve high pressure die casting of aluminium alloys with a globular
alpha phase, such as A356 or A357 alloys. These alloys, until now are used exclusively for the
obtaining cast components, but in this project they will be applied to perform components by semi-solid
extrusion. The intention is open a new field of possibilities for the development of new alloys in the
manufacture of extruded aluminium components. Besides these industrial objectives such as obtaining
ingots with rheocasting structure and the thixoextrusion, the project attempts, from the scientific point of
view, to contribute to the study of the processes of nucleation and growth of phases during the process
of controlled solidification, using nucleating additives. Moreover, it will contribute to a better
understanding of plastic deformation mechanisms of aluminium-silicon alloys in semisolid state.
Furthermore, the effect of temperature, extrusion rate and percentage of deformation in the structural
integrity of the products, will be studied.
The die design and the optimization of thixoextrusion process will be performed by computer-aided
simulation. One will experiment using an induction furnace and a 50-ton press. The microstructural
characterization of rheocasting ingots and extruded products and the determination of mechanical
properties will permit the process optimization and validating the performed simulations.
aluminio, extrusión, microestructura, molde, propiedades mecánicas, semisólido, thixoextrusión, tratamientos térmicos
Adm. Estat
Plan Nacional de Investigación Científica, Desarrollo e Innovación Tecnológica 2008-2011
Resoluton year
Funcding program
Ciencias y Tecnología de Materiales
Funding subprogram
Funding call
Proyectos de investigación y acciones complementarias
Grant institution
Gobierno De España. Ministerio De Ciencia E Innovación (micinn)


Scientific and technological production

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