Objective
Acquisiti on of fundamental knowledge on Metal Matrix Composites, especially ceramic fibre reinforced aluminium alloys. Study of the processing aspects. Correlation of thermomechanical properties to microstructure and interfacial phenomena.
The goal of the project was to acquire a comprehensive know how on ceramic fibre reinforced aluminium alloys, referring to manufacturing, processing and heat treatment and to evaluate their performance in terms of mechanical and wear properties.
Ceramic fibre and whisker preforms from several suppliers have been infiltrated by squeeze casting with a wide variety of aluminium alloys. It has been found that infiltration causes heterogeneities in the preform and segregation of alloying elements. The composition of the alloy that actually infiltrates the preform is not exactly that of the original alloy, as a fraction of the alloying elements is retained above the preform. Heat treatments commonly used for unreinforced aluminium alloys are not optimal for composites, and we have come to the conclusion that reinforcing materials modified solution treating and age hardening kinetics. Hence solution treating and tempering times and temperatures have been optimised for composites.
Mechanical testing and wear tests have been carried out on almost all composites. The influence of the preform composition and binder on tensile characteristics was clearly revealed. There exists an optimal composition of the alloy that yields the best tensile properties to the composite, as well as some other alloys that will give more wear resistant materials.
THE EFFECT OF DIFFERENT ALLOYING ELEMENTS ON THE BONDING CONDITIONS AND THE MECHANICAL PROPERTIES OF THE COMPOSITES WILL BE STUDIED. IN THIS CONTEXT IT WILL ALSO BE DETERMINED HOW METALLURGICAL AND PROCESSING PARAMETERS INFLUENCE THE MICROSTRUCTURE OF THE INTERFACE BETWEEN METAL AND CERAMIC.
THE MANUFACTURING METHOD FOR THE COMPOSITES WILL BE SQUEEZE-CASTING AS IT APPEARS THE MOST PROMISING FOR MASS PRODUCTION.
Fields of science (EuroSciVoc)
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
CORDIS classifies projects with EuroSciVoc, a multilingual taxonomy of fields of science, through a semi-automatic process based on NLP techniques. See: The European Science Vocabulary.
- engineering and technology materials engineering fibers
- engineering and technology materials engineering composites
- natural sciences chemical sciences inorganic chemistry post-transition metals
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Programme(s)
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Calls for proposals are divided into topics. A topic defines a specific subject or area for which applicants can submit proposals. The description of a topic comprises its specific scope and the expected impact of the funded project.
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Funding scheme (or “Type of Action”) inside a programme with common features. It specifies: the scope of what is funded; the reimbursement rate; specific evaluation criteria to qualify for funding; and the use of simplified forms of costs like lump sums.
Coordinator
92109 BOULOGNE-BILLANCOURT
France
The total costs incurred by this organisation to participate in the project, including direct and indirect costs. This amount is a subset of the overall project budget.