Pengaruh Fraksi Volume Terhadap Struktur Mikro, Ketahanan Aus Dan Kekerasan Pada Komposit Matriks Logam Al-Cu/SiC(P)
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Institusion
Institut Teknologi Perusahaan Listrik Negara
Author
Rooseno, Andhika
Pramono, Andika Widya
Pramono, Andika Widya
Subject
Teknik Mesin
Datestamp
2019-10-09 06:22:29
Abstract :
Changes in the times and the development of highly advanced tecnology, demanding the existence of a material that has specific criteria, such as light, strong, hard, wear resistant and cheap. One of the material development efforts that can answer the problem is a composite material. In this research, metal matrix composite matrix of aluminium alloy copper (Al-Cu) with silicon carbide (SiC) amplifier is done by stirr casting method with 3000 rpm stirring speed at 725oC heating temperature and stirring time for 2 minutes. Experiments were performed by varying the percent volume fraction of the amplifer (7,5%, 10%, 12,5%) and the particle size of 270#. On the manufacture of metal matrix composites required the addition of magnesium. The addition of magnesium in the composite was carried out to increase the discussion of silicon carbide perticles. These results are then tested, namely by metallographic testing, brinell hardnesstesting, and abrasive wear testing. As the volume fraction increases, the hardness value increases, the highest hardness value is at a volume fraction of 12,5% with a hardness value of 154,3 HB . Abrasive test results descrease with increasing volume fraction, the lowest abrasive rate decreases occur at a volume fraction of 12,5% with an abrasive rate of 3,898x10-4 mm3/mm. The results of microstructure of silicon carbide are increasingly distributed to grain boundaries with increasing volume fractions.
Changes in the times and the development of highly advanced tecnology, demanding the existence of a material that has specific criteria, such as light, strong, hard, wear resistant and cheap. One of the material development efforts that can answer the problem is a composite material. In this research, metal matrix composite matrix of aluminium alloy copper (Al-Cu) with silicon carbide (SiC) amplifier is done by stirr casting method with 3000 rpm stirring speed at 725oC heating temperature and stirring time for 2 minutes. Experiments were performed by varying the percent volume fraction of the amplifer (7,5%, 10%, 12,5%) and the particle size of 270#. On the manufacture of metal matrix composites required the addition of magnesium. The addition of magnesium in the composite was carried out to increase the discussion of silicon carbide perticles. These results are then tested, namely by metallographic testing, brinell hardnesstesting, and abrasive wear testing. As the volume fraction increases, the hardness value increases, the highest hardness value is at a volume fraction of 12,5% with a hardness value of 154,3 HB . Abrasive test results descrease with increasing volume fraction, the lowest abrasive rate decreases occur at a volume fraction of 12,5% with an abrasive rate of 3,898x10-4 mm3/mm. The results of microstructure of silicon carbide are increasingly distributed to grain boundaries with increasing volume fractions.
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