| 摘要 |
The invention relates to a process for producing composite metal matrix materials of aluminium and aluminium alloys or other metals and alloys with insertion of SIC ceramic particles or powders, oxide, carbide, nitride, glass, graphite or metal particles or powders having 5 ... 60 miu m granulation, in a proportion of 3 ... 20 % by volume. The process consists in hot deforming, in solid phase, some packets comprising sheet metal or metal foils coated with insertion particles. The basic pre-composite elements are obtained by coating the sheet metal or matrix foils with insertion particles or powders on a side or both sides, by spraying a suspension of particles in the liquid medium of a solvent such as ethyl alcohol which also contains an adesive such as colophonium, in a ratio of 10 ... 30 g/100 ml of solvent. After drying, the pre-composite elements are assembled in composed packets of pre-calculated shapes and sizes. The matrix components and the insertion are consolidated by hot deformation by rolling, pressing or extruding in case of the composite materials made of aluminium alloy: AlMgSi/SiC particles, at a temperature of 350 ... 450 degree C, with degrees of deformation depending on the deformation process and product sizes. There are obtained materials with metal matrix and insertion of particles or powders of various natures, with homogenous structures and having higher physical-mechanical and technological characteristics.
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