Objective
The project aims to model and develop a near-net shape fabrication process based on centrifugal casting which is able to produce economically metal based components locally reinforced by ceramic particles for improved mechanical properties.
Research was carried out, on one hand, to elaborate a composite material with light alloy matrix and on an other hand, to cast it with centrifugal process at high speed. Associating elaboration and shaping enables foundry pieces to be made with a reduced allowance compared to the finished material which gives, due to the centrifugal process, a preferential reinforced area. The elaboration technique for a composite material has required the knowledge of chemists and metallurgists in order to choose the very best possible couple alloy/reinforcing element and to determine the most interesting method for the composite material elaboration. Therefore, after several tests of elaboration and physical and mechanical values, 7% silicium aluminium light alloy (AS 7 G) and silicium carbide particles were selected. The elaboration of composite alloy takes place in the furnace with a mechanical stirring device which creates a vortex in the melting alloy. Silicium carbide particles are introduced into the vortex after a superficial heat treatment which enables a good wettability to be attained compared with the liquid alloy and consequently this enables easier incorporation. The centrifugal casting experimentations have led to the development of precise production sequences which enable, due to various parameters specific to this process, perfectly controlled reinforced area pieces to be produced, perfectly adequate for their application. A complete physical and mechanical characterization has been carried out on a large range of pieces obtained by this process. In addition to these tests and characterizations, a complete featuring of centrifugal process has been performed. This enables the position of the reinforced area in the centrifugally cast piece to be known. The rate of reinforcement of this area, with regard to the various parameters particular to the alloy and the reinforced elements, can also be assessed. Finally, a study of the machinability of the material, involving removal of the scraps during machining operations permitted the designing of specific toolings for rough machining operations. With such toolings, machining of the reinforced area is possible with particularly good cutting conditions. This research program led to the proposal of a new performant and competitive material due to a perfect mastership integrating the complete fabrication cycle.
Four main tasks will be carried out :
- the modelling of solidification of composite materials during centrifugal casting in order to predict the influence of the process parameters on the structure and position of the reinforced zone. Model centrifugal casting experiments with transparent materials will be carried out to help the modelling
- the determination of particle pretreatment conditions for introduction in liquid metals. Production of coated particles for the experiments and feasibility of upscaling of the process will be carried out
- the realization of centrifugal casting experiments with Al-alloys and coated ceramic particles in order to produce components for further characterization and assessment of the validity of the model
- the microstructural and mechanical characterization of the produced components for evaluation of the properties due to reinforcement.
Each part of this project will be simultaneously handled during the 3 years of the programme, with a discrepancy of 4 months. This 4 months period will be spent realizing the device for incorporating the reinforcement elements into the alloys and determining the coating conditions of the various reinforcement particles in order to start the first casting operations.
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 composites
- natural sciences chemical sciences inorganic chemistry inorganic compounds
- engineering and technology mechanical engineering manufacturing engineering subtractive manufacturing
- natural sciences chemical sciences inorganic chemistry post-transition metals
- engineering and technology materials engineering coating and films
You need to log in or register to use this function
Programme(s)
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Multi-annual funding programmes that define the EU’s priorities for research and innovation.
Topic(s)
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.
Data not available
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.
Call for proposal
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Data not available
Procedure for inviting applicants to submit project proposals, with the aim of receiving EU funding.
Funding Scheme
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.
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.
Data not available
Coordinator
57360 Amneville
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.