PENGARUH KANDUNGAN ALUMINA PADA Al-Al2O3 KOMPOSIT DENGAN METODE PENGECORAN SQUEZZE TERHADAP UJI TARIK DAN UJI MIKRO
DOI:
https://doi.org/10.36499/jim.v13i2.2033Abstract
Tujuan dari penelitian ini adalah untuk mengetahui pengaruh kandungan alumina pada Al-Al2O3 Komposit terhadap tegangan tarik dan struktur mikro. Dalam penelitian ini penulis memvariasikan pencampuran 5%,10%,15%. Sehingga penelitian ini didapatkan hasil dari uji tarik tanpa perlakuan dengan rata-rata 128,42 MPa, dengan perlakuan campuran alumina 5%,10%,15% memiliki rata-rata kekuatan tarik sebesar 186,28 MPa,156,05 MPa,122,32 MPa. Sedangkan untuk jarak dendrit yang tanpa perlakuan memiliki rata-rata 12,37 dengan perlakuan campuran alumina 5%,10%,15% memiliki rata-rata jarak dendrit sebesar 11,54 µm, 11,175 µm, 9,50 µm. Dari hasil penelitian ini uji tarik yang paling tinggi dengan campuran 5% dengan kekuatan tariknya sebesar 186,28 MPa, sedangkan untuk jarak dendrit semakin banyak campuran alumina jarak dendritnya semakin dekat.
Kata kunci: Alumunium, alumina  (Al-Al2O3)
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