Rahman, Hastya Alfian (2014) Studi Eksperimental Pengaruh Variasi Penambahan Fraksi Volume Abu Terbang (Fly Ash) Terhadap Karakteristik Fluiditas Dan Sifat Mekanik Alumunium Matrix Composite. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Fluiditas merupakan salah satu faktor yang menjadi
pertimbangan di dalam dunia pengecoran. Pada proses pembuatan
alumunium matrix composite dengan partikel penguat berupa abu
terbang (fly ash) melalui proses pengecoran, kemampuan logam
cair untuk mengalir sampai batas tertentu merupakan keuntungan
tersendiri dari alumunium matrix composite tersebut selain
ditinjau dari sifat mekaniknya.
Penelitian ini difokuskan meneliti pengaruh penambahan
partikel abu terbang terhadap karakteristik fluiditas, persebaran
distribusi partikel abu terbang, sifat mekanik, dan struktur mikro
dari alumunium matrix composite dengan variasi penambahan
partikel abu terbang pada kadar 10%, 15%, 20%, 25%, dan 30%.
Penelitian ini dilakukan dengan melebur alumunium hingga
temperatur + 850oC, kemudian menambahkan partikel abu
terbang dan diaduk dengan metode stir casting pada putaran 515
rpm selama 15 menit. Campuran tersebut kemudian dituang ke
dalam cetakan fluiditas dan didinginkan.
Dari penelitian ini didapatkan bahwa seiring dengan
meningkatnya prosentase abu terbang, maka fluiditas dari
alumunium matrix composite akan mengalami penurunan.
Persebaran distribusi partikel abu terbang pada matriks terlihat
acak, namun memiliki kecenderungan untuk turun dari setpoint 1
v
sampai dengan titik 11. Nilai kekerasan alumunium matrix
composite mempunyai kecenderungan meningkat sampai dengan
penambahan fraksi volume 20% abu terbang. ========== Fluidity is one factor to be considered in the casting
technology. In the process of making aluminum matrix composite
with reinforce particles such as fly ash by the casting process,
molten metal's ability to flow until some extent is a distinct
advantage of the aluminum matrix composite apart in terms of its
mechanical properties.
This study focused on examining the effect of the addition of
fly ash particles on the characteristics of fluidity, distribution of
fly ash particle in alumunium matrix composite, mechanical
properties, and microstructure of aluminum matrix composite
with the addition of a variation of fly ash particles at levels 10%,
15%, 20%, 25%, and 30%. This research was started by melting
aluminum to + 850oC, then the fly ash particles added to molten
metal and mixing by stir casting method on 515 rpm for 15
minutes. The mixture is then poured into fluidity molds and
cooled by air.
From this study, we had found that by increasing percentage
of fly ash make the fluidity of the aluminum matrix composite
will decrease. Distribution of fly ash particle in the matrix looks
random, but has a tendency to decrease from setpoint 1 to 11
points. Mechanical properties of hardness of alumunium matrix
composite will increase to the addition of 20% fly ash of fraction
volume.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSM 620.118 Rah s |
| Uncontrolled Keywords: | Fluiditas, Alumunium Matrix Composite, Abu Terbang (Fly Ash), Stir Casting, Kekerasan, Distribusi Partikel, dan Struktur Mikro, Fluidity, Alumunium Matrix Composite, Fly Ash, Stir casting, Hardness, Particle Distribution, and Microstructure. |
| Subjects: | T Technology > TL Motor vehicles. Aeronautics. Astronautics > TL240.5 Composite materials |
| Divisions: | Faculty of Industrial Technology > Mechanical Engineering > 21201-(S1) Undergraduate Thesis |
| Depositing User: | - Davi Wah |
| Date Deposited: | 30 Jun 2019 15:36 |
| Last Modified: | 30 Jun 2019 15:36 |
| URI: | http://repository.its.ac.id/id/eprint/63179 |
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