Objective
To characterise selected metal-matrix particulate composite alloys by microstructural and compositional analyses and mechanical testing; to improve the properties and the performance by suitable treatment. To develop new techniques to produce such alloys.
Progress to end 1990
1. Elaboration of Al SiC, Al (Cu)-SiC, Al (Mg,Si)-SiC particulate composites by vacuum spray process starting from elemental (Al, Cu, Si, Mg, SiC) powders and relative optimization of the main technological parameter of the process. Remelting of the composites by induction and/or laser treatment for bulk material purpose. Determination of the optimal heat treatment conditions (temperature, time, environment) in order to improve the mechanical properties. Characterisation of the microstructures by optical and SEM microscopy and of the mechanical properties by tensile tests on miniaturised specimen at different temperatures in the range of 20C-300C. Evaluation of the potential of the above composites by compariso n of the performances with that of commercial USA Al-SiC composite (for instance DURALCAN). Finally, to perform trials aimed at making the Al-SiC composite superplastic.
2. Elaboration of a new Al-Al203 composite in small quantities using a measuring process (induction heating laser plus).
3. Two papers published in Proceedings of MECAMAT Congress 89; St. Etienne (F) and ASM-Europe Congress, Amsterdam (Holland) 1990.
Detailed description of work foreseen in 1991 (expected results)
1. Evaluation and selection of materials having regard for industrial feasibility, potential uses and European needs. Investigation of the possibility to fabricate the chosen composite in agreement with an Al firm.
2. Characterisation of the Al-Al203 composite prepared in 1990.
Short description of evolution of work in 1992
Conclusion on Al-SiC, Al(Cu)-SiC, Al (Mg,Si) SiC and Al-Al203 composites.
Topic(s)
Data not availableCall for proposal
Data not availableFunding Scheme
Data not availableCoordinator
21020 Ispra
Italy