Ritonga, Harvi Akbar (2024) Analisis Pengaruh Kandungan Stabilizer Ca Metal Granule Dan Stirring Time Pada Sifat Fisik Dan Kompresi Paduan Aluminium 6061 Foam Menggunakan Foaming Agent CaCO3. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Closed-cell aluminium foam memiliki karakteristik mekanik yang baik, seperti kemampuan absorpsi energi yang tinggi. Oleh karena itu, closed-cell aluminium foam cocok untuk dijadikan sebagai filler pada crash box. Komponen ini penting dalam kendaraan untuk menyerap energi saat terjadi tabrakan. Closed-cell aluminium foam dapat diproduksi melalui metode melt route dengan penambahan foaming agent. Pada metode tersebut, proses pembentukan pori-pori menjadi tantangan untuk dikontrol sehingga perlu penambahan stabilizer dan waktu pengadukan yang sesuai. Penelitian ini bertujuan untuk menganalisis pengaruh variasi komposisi stabilizer kalsium metal granule dan stirring time setelah penambahan foaming agent terhadap sifat fisik dan sifat mekanik aluminium foam. Proses pengecoran dimulai dengan melelehkan Aluminium 6061 pada suhu 750℃. Setelah itu, stabilizer kalsium metal granule ditambahkan dalam variasi 1, 2, dan 3%, lalu diaduk selama 120 detik. Selanjutnya, foaming agent CaCO3 dengan komposisi 3% dimasukkan dan diaduk dengan waktu bervariasi: 30, 60, dan 90 detik. Spesimen aluminium foam dianalisis dengan pengujian densitas, porositas, mikroskop stereo, SEM-EDX, XRD, dan kompresi. Spesimen aluminium foam dengan komposisi kalsium metal granule sebanyak 2% dengan stirring time selama 30 detik menunjukkan hasil yang paling optimal. Densitas yang dihasilkan sebesar 1,071 g/cm3, porositas sebesar 60,33%, dan ukuran rata-rata radius 0,871 mm pada. Sifat fisik tersebut menghasilkan nilai kekuatan kompresi dan absorpsi energi tertinggi sebesar 29,54 MPa dan 7,40 MJ/m3.
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Closed-cell aluminum foam has excellent mechanical properties, such as high energy absorption capability. Therefore, it is suitable as a filler in crash boxes. This component is crucial on vehicles for absorbing energy during collisions. Closed-cell aluminum foam can be produced using the melt route method with the addition of a foaming agent. In this method, controlling pore formation is a challenge, necessitating the addition of stabilizers and appropriate stirring time. This study aims to analyze the influence of varying compositions of calcium metal granule stabilizer and stirring time after the addition of the foaming agent on the physical and mechanical properties of aluminum foam. The composition variations used for the calcium metal granule stabilizer are 1, 2 and 3%. The casting process begins by melting Aluminum 6061 at 750℃, followed by the addition of the stabilizer and stirring for 120 seconds. Then, the foaming agent CaCO3 is added at a 3% composition and stirring with variations of 30, 60 and 90 seconds. The aluminum foam specimens were analyzed using density tests, porosity tests, stereo microscopy, SEM-EDX, XRD, and compression tests. The aluminum foam specimen with 2% calcium metal granule composition and a stirring time of 30 seconds shows the most optimal results. The density obtained is 1,071 g/cm³, the porosity is 60,33%, and the average pore radius is 0,871 mm. These physical properties result in the highest compressive strength and energy absorption values of 29,54 MPa and 7,40 MJ/m³.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Aluminium foam, Calsium, Calsium Carbonate, Stirring Time, Kalsium, Kalsium Karbonat |
| Subjects: | T Technology > TN Mining engineering. Metallurgy > TN775 Aluminum alloys--Metallurgy. |
| Divisions: | Faculty of Industrial Technology and Systems Engineering (INDSYS) > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis |
| Depositing User: | Harvi Akbar Ritonga |
| Date Deposited: | 20 Aug 2024 02:07 |
| Last Modified: | 20 Aug 2024 02:07 |
| URI: | http://repository.its.ac.id/id/eprint/112483 |
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