Abrasive wear of aluminum alloys produced without and with foaming

  • 1 Institute of Metalscience, Equipment and Technologies with Center of Hydro- and Aerodynamics "Acad. A. Balevski" - Bulgarian Academy of Sciences, Sofia, Bulgaria
  • 2 Technical University - Sofia


A methodology has been developed for obtaining of porous castings from Al and aluminum A356 alloy. The methodology includes introduction of Ca into the melt for viscosity increasing and homogenization by mechanical stirring. This is followed by addition of TiH2, homogenization, subsequent formation of the porous structure and crystallization. Tests were carried out on specimens of the castings involving abrasive wearing under dry friction conditions on a surface with hard-attached abrasive particles.


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