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Purpose: the work presents a new composite based in Al matrix reinforced with porous, lightweight and low cost SiO2-/MgO/Al2-O3- ceramic particles. The new material can present a unique combination of properties: those related to metal/ceramic composites and still associating some characteristics of cellular materials, as the low density and high plastic deformation under compression stresses. Design/methodology/approach: processing technique involves the infiltration of AA7075 alloy in the semisolid thixotropic state into a layer of porous ceramic particles. Products were analyzed by X-ray tomography, optical and electronic microscopy to observe microstructure and metal/ceramic interfaces. Density was measured by He picnometry; semi-static compression tests were performed to evaluate the deformation ability of the material. Thermal properties were theoretically evaluated. Findings: concerning the production method, thixoinfiltration is a feasible processing route, with no difficult control of parameters and does not rely on specific and onerous equipment. Moreover, it is flexible to different alloys. Concerning the product, low density composites can be produced with good dispersion of reinforcement and reliable internal quality; this material presents a plateau of plastic deformation at low stresses under compression, signalizing a potential application as energy absorbers. Theoretical simulations show also good thermal insulation ability. Research limitations/implications: as a new product, the full characterization of properties of the new composite is still to be achieved. Therefore, the full potential of commercial application is to be determined. The product can present limitations for application involving tensile stresses due to poor metal/ceramic interfaces. Practical implications: the thixoinfiltration can represent an alternative, low cost processing route for low density composites. The new composites presented are low weight and low cost material, presenting a unique combination of properties which can bring a whole new application field, as low cost, low density components for energy absorption and thermal insulation. Originality/value: both the processing route and the material produced - a low density metal/ceramic composite, using porous ceramic particulates as reinforcement, are new concepts under development by the proposing group at FEM/UNICAMP.
Słowa kluczowe
Wydawca
Rocznik
Tom
Strony
7--15
Opis fizyczny
Bibliogr. 16 poz., rys., tab.
Twórcy
autor
- Faculty of Mechanical Engineering, University of Campinas, SP, Brazil
autor
- Faculty of Mechanical Engineering, University of Campinas, SP, Brazil
Bibliografia
- [1] V. Paserin, J. Shu, A.M. Liu, B.Q. Yu, L. Renny, M. Groo, Commercial production and applications of Ni-based specialty foams, Proceedings of the 5th International Conference on Porous Metals and Metallic Alloys, MetFoam’ 2007, Montreal, Canada, 2007, 121-124.
- [2] J.A. Reglero, E. Solorzano, M.A. Rodriguez-Perez, J.A. de Saja, Design and testing of an energy absorber prototype based on aluminum foams, Materials & Design 17 (2010) 1-6.
- [3] A. Ejlali, A. Ejlali, K. Hooman, H. Gurgenci, Application of high porosity metal foams as air-cooled heat exchangers to high heat load removal systems, International. Communications in Heat and Mass Transfer 36 (2009) 674-679.
- [4] R. Nowosielski, A. Kania, M. Spilka, Development of eco-materials and materials technology, Journal of Achievements in Materials and Manufacturing Engineering 21 (2007) 27-30.
- [5] J. Weise, J. Baumeister, O. Yezerska, N. Salk, G.B.D. Silva, Syntactic iron foams with integrated microglass bubbles produced by means of metal powder injection moulding, Advanced Engineering Materials 12/17 (2010) 604-608.
- [6] M.H. Robert, F. Gatamorta, J. Weise, Manufacture of metallic syntactic foams by thixoinfiltration. Proceedings of the International Conference on Cellular Materials CELLMATT’2012, Dresden, Germany, 2012, (to be published).
- [7] M.H. Robert, A.F. Jorge, F. Gatamorta, R.R. Silva, Thixoinfiltration: a new approach to produce cellular and other low density metallic materials, Journal of Achievements in Materials and Manufacturing Engineering 40/2 (2010) 180-187.
- [8] M.H. Robert, D. Delbin, Manufacturing of cellular A2011 alloy from semi-solid state, Journal of Achievements in Materials and Manufacturing Engineering 24/1 (2007) 115-122.
- [9] M.H. Robert, L. M. P. Ferreira, A. F. Jorge, E. Bayraktar, Production of metal matrix composites using thixoinfiltration techniques, Proceedings of the 12 International Congress and Exposition on Experimental and Applied Mechanics SEM’2012, Costa Mesa, CA, USA, (2012) 25-32.
- [10] S. Das, D.P. Mondal, A.K. Gupta, Compressive deformation and damping behaviour of Aluminium composite foam, Proceedings of the 7th International Conference on Porous Metals and Metallic Alloys, MetFoam’ 2011, Busan, Korea, 2011, 12-18.
- [11] H.P. Degischer, B. Kriszt, Handbook of Cellular Metals: Production, Processing, Applications. Wiley-VCH, Weinheim, 2002.
- [12] J.C. Maxwell, A treatise on electricity and magnetism, Third Edition, New York, Dover, 1954.
- [13] H.W. Russel, Principles of heat flow in porous insulation. Journal of the American Ceramics Society 18 (1935) 1-5.
- [14] M.F. Ashby, A.G. Evans, N.A. Fleck, L.J. Gibson, J.W. Hutchinson, H.N.G. Wadley. Metal Foams: A Design Guide, Butterworth-Heinemann, Boston, 2000.
- [15] A. Pusz, A. Januszka, S. Lesz, R. Nowosielski, Thermal conductivity measuring station for metallic glasse, Archives of Materials Science and Engineering 47/2 (2011) 95-102.
- [16] G. Wróbel, S. Pawlak, G. Muzia, Thermal diffusivity measurements of selected fiber reinforced polymer composites using heat impulse method, Archives of Materials Science and Engineering 47/2 (2011) 25-32.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-15f91bad-7343-4942-b497-09092cece06a