Aliansyah, Eka Akbar Rizky (2023) Analisis Pengaruh Temperatur dan Holding Time Solution Treatment terhadap Karakteristik Fisik dan Mekanik Paduan Al-Mg-Si Foam Menggunakan Space Holder NaCl. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Aluminium merupakan logam non-ferrous yang paling banyak digunakan dalam berbagai aplikasi industri, dimana jenis yang paling banyak digunakan yaitu paduan Al-Mg-Si. Hal ini dikarenakan karakteristik aluminium paduan Al-Mg-Si yang mudah untuk dilakukan proses manufaktur dan perlakuan panas. Salah satu penerapan aluminium dalam industri, khususnya industri bidang otomotif, yaitu aluminium foam yang dapat digunakan sebagai filler crashbox pada kendaraan. Crashbox merupakan salah satu sistem perlindungan pasif yang ada pada kendaraan, khususnya mobil. Untuk meningkatkan karakteristik fisik dan mekanik pada aluminium foam, dilakukan proses perlakuan panas berupa solution treatment dan artificial aging. Penelitian ini akan membuat paduan Al-Mg-Si foam dengan menggunakan metode gravity casting dan space holder NaCl. Kemudian dilakukan solution treatment dengan variasi temperatur (530°C dan 560°C) dan holding time (20, 30, dan 40 menit), dilanjutkan dengan artificial aging pada temperatur 180°C selama 8 jam. Perlakuan panas solution treatment pada berbagai temperatur dan holding time tidak memiliki pengaruh terhadap karakteristik fisik pada aluminium foam. Pada penelitian ini, dihasilkan aluminium foam dengan nilai rata-rata densitas sebesar 1,07 g/cm3 dan porositas sebesar 60,33%. Ukuran poros yang dihasilkan memiliki ukuran antara 2,19-3,96 mm dimana ukuran tersebut dipengaruhi oleh ukuran NaCl yang digunakan. Variasi pada perlakuan panas solution treatment juga tidak memberikan pengaruh signifikan pada sifat mekanik aluminium foam. Pengaruh tersebut akan terlihat apabila aluminium foam juga memperoleh artificial aging. Nilai kekerasan tertinggi terdapat pada spesimen ST534A sebesar 128,75 HV, dan spesimen ST562A sebesar 127 HV. Untuk kemampuan penyerapan energi terbaik pada titik yang sama, yaitu pada spesimen yang diberikan perlakuan holding time solution treatment selama 30 menit. Pada spesimen ST533A memiliki nilai energi absorpsi sebesar 16,06 MJ/m3, sedangkan pada spesimen ST563A memiliki nilai energi absorpsi sebesar 23,88 MJ/m3. Dari penelitian ini, dapat disimpulkan bahwa solution treatment pada temperatur 560°C dengan holding time 30 menit merupakan hasil terbaik untuk diaplikasikan pada aluminium foam sebagai filler crashbox.
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Aluminum is the most widely used non-ferrous metal in various industrial applications, where the most widely used type is the Al-Mg-Si alloy. This is due to the characteristics of the Al-Mg-Si aluminum alloy which is easy to carry out the manufacturing process and heat treatment. One application of aluminum in the industry, especially the automotive industry, is aluminum foam which can be used as a filler for cashboxes in vehicles. Crashbox is one of the passive protection systems that exist in vehicles, especially cars. To improve the physical and mechanical characteristics of aluminum foam, a heat treatment process is carried out in the form of solution treatment and artificial aging. This research will make Al-Mg-Si foam alloy using the gravity casting method and NaCl space holder. Then, solution treatment was carried out with variations in temperature (530°C and 560°C) and holding time (20, 30, and 40 minutes), followed by artificial aging at 180°C for 8 hours. Heat treatment solution treatment at various temperatures and holding times does not affect the physical characteristics of the aluminum foam. In this study, the aluminum foam was produced with an average density value of 1.07 g/cm3 and a porosity of 60.33%. The size of the resulting shaft has a size between 2.19-3.96 mm and the size is influenced by the size of the NaCl used. Variations in solution heat treatment also did not have a significant effect on the mechanical properties of aluminum foam. This effect will be seen if the aluminum foam also gets artificial aging. The highest hardness value was found in the ST534A specimen of 128.75 HV, and the ST562A specimen of 127 HV. For the best energy absorption ability at the same point, namely on specimens that were given the holding time solution treatment for 30 minutes. The ST533A specimen has an absorption energy value of 16.06 MJ/m3, while the ST563A specimen has an absorption energy value of 23.88 MJ/m3. From this study, it can be concluded that solution treatment at a temperature of 560°C with a holding time of 30 minutes is the best result for application to aluminum foam as a cashbox filler.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Aluminium foam, filler crashbox, karakteristik, paduan Al-Mg-Si, solution treatment, characteristics, Al-Mg-Si alloy, solution treatment |
| 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: | Eka Akbar Rizky Aliansyah |
| Date Deposited: | 10 Feb 2023 14:50 |
| Last Modified: | 10 Feb 2023 14:50 |
| URI: | http://repository.its.ac.id/id/eprint/96956 |
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