Е-Публикации
Технически университет - София

Abstract: Aluminum-silicon alloys of eutectic and hypereutectic type are non-standard alloyed. AlSi18Cu3CrMn and AlSi25Cu3Cr alloys have been modified with the classic modifier for this type of alloy-phosphorus. In order to stickle all the structural components, the alloys AlSi11Cu5Mg, AlSi18Cu5Mg and AlSi18Cu3CrMn are complex modified. The test modified alloys compositions were subjected to a T6 heat treatment. A turning tool GHDR/L-JHP with carbide insert GIMF 502 was used in order to carry out the mechanical processing. The pieces from all tested alloys were processed in the same conditions: Spindle speed-3500 revolution per minute; feed-0.1mm/rev. The lathing process was carried out in an environment of constant cooling. After turning, the microstructure of the obtained surface of the alloys was studied.

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