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1 Journal of Achievements in Materials and Manufacturing Engineering

1 2006

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Tribological properties of aluminium matrix composites reinforcement with intermetallic

Wieczorek J., Dolata-Grosz A., Dyzia M., Śleziona J.

Journal of Achievements in Materials and Manufacturing Engineering

2006

Vol. 15, nr 1-2

58--62

Purpose: In the investigations, two types of material were taken for the cooperation with the composite Al + intermetallic phases. One of the materials were composites based on the AlMg12Si alloy, reinforced with ceramic particles (SiC, Al2O3), and the other was spheroidal cast iron. Design/methodology/approach: For the investigations of wear under technically dry friction conditions the pin-on-disc measuring system was applied. Findings: It has been shown that Al based composites reinforced with intermetallic phases are characterized by considerable resistance to tribological wear under technically dry friction conditions in a cooperation with composites based on the Al alloy (AlSi12CuNiMg) . The tribological systems in which composites of the Al +intermetallic phases type are used, are characterized by a stable course of the friction coefficient value as a function of friction distance, irrespective of the type of material cooperating with them. Practical implications: In the case of cooperation of Al-Al2O3-Al3Ti-Al3Fe composites with aluminium alloy based composites, one should take into account the changes in friction conditions resulting from plastic deformation of the friction surface of the composite Al + intermetallic phases. Originality/value: Thanks to conducted researches it was stated that there is a possibilty of application of heterophase reinforcement that use the mixture of intermetalic phases as a effective method of aluminium alloys resistance improving the wear in dry sliding conditions.