Porosity and Microstructure Analysis in Aluminum Waste Pieces

Dicky Tyagita, Andik Irawan


Aluminum  Waste  Pieces  (AWP)  is  aluminum  waste  from  the  results  of  kitchen equipment craftsmen in Panti District, Jember Regency, which can be used as raw materials for metal casting into manufacturing products. This AWP is melted to be recycled and thrown into bars.  In  this  study  discussed  the  analysis  of  ingot  porosity  from  AWP  and  microstructure observation. Porosity analysis is performed to determine defects in clotting caused by vacancies because metallic liquids are unable to fill compressed areas during volume shrinkage and release of dissolved hydrogen gas during compaction. The waste used is 1-10 cm remaining pieces with a  thickness  of  0.5-5mm.  AWP  is  casted  using  the  capacity  of  a  three-liter  stove  container. Another benefit of this research is recycling AWP as raw material for making ingots. The purpose of  this  study  is  to  determine  the  level  of  AWP. The  results  of  this  study  are  remelting  or  re- casting  causes  high  porosity  with  an  average  porosity  percentage  value  of  43.22%  for  43  g cluster, 41.85% for 48 g, and 40.55% for 49 g cluster. This aluminum casting ingot has not been used  for  construction  materials,  but  can  be  used  for  other  metal  coating  processes  to  inhibit corrosion.

Teks Lengkap:



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