PENGARUH SiC TERHADAP SIFAT MEKANIK DAN MIKROSTRUKTUR PADA ALUMINIUM A356 MENGGUNAKAN PENGECORAN METODE COOLING SLOPE
| Main Authors: | Sandi, Diki Ari; UNIVERSITAS SUMATERA UTARA, ., Tugiman; UNIVERSITAS SUMATERA UTARA |
|---|---|
| Format: | Article info application/pdf eJournal |
| Bahasa: | eng |
| Terbitan: |
Jurnal Dinamis
, 2019
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| Online Access: |
https://jurnal.usu.ac.id/index.php/jddtm/article/view/25534 https://jurnal.usu.ac.id/index.php/jddtm/article/view/25534/11446 |
Daftar Isi:
- Aluminum matrix composite has good mechanical properties compared to aluminum alloys without reinforcement. The type of aluminum used A356 is widely used in engineering. This study aims to determine the effect of the slope angle carried out when casting metal on mechanical properties of hardness, impact, tensile, wear and microstructure. Specimens were made using casting slope cooling methods with variations in slope angle 15o, 30o, 45o, 60o, and 75o with a pour temperature of 680oC and a mixture of SiC 0.5% and 2.5%. The highest average hardness obtained in the 2.5% SiC mixture of 30o slope angle is 55.74 BHN. The highest impact energy was obtained at a mixture of 0.5% with a slope of 75o which was equal to 12.87 Joules and the highest value was 0.156 Joule / mm. The highest impact energy was obtained at a mixture of 0.5% with a slope of 75o which was equal to 12.87 Joules and the highest value was 0.156 Joule / mm. Wear testing is done by pin on disk method with variations in rotation of 150 Rpm, 180 Rpm, 210 Rpm. The highest average tensile stress of Al-SiC material is obtained at 30o slope variation that is equal to 119.91 Mpa. Microstructure results showed an increase in slope angle affecting the microstructure of Al-SiC.