Trisnawan, Yogie Arisandi (2015) Pengaruh penambahan kalsium terhadap struktur mikro, sifat mekanik, dan ketahanan termal paduan Mg-6Zn sebagai aplikasi engine block. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Paduan magnesium banyak diaplikasikan pada dunia otomotif
mobil atau motor dan mesin pesawat terbang. Hal ini
dikarenakan berat dari magnesium sendiri yang sangat ringan
dan memiliki kekuatan tinggi. Serta paduan magnesium memiliki
konduktifitas termal yang baik, modulus elastisitas yang tinggi
dan memiliki sifat mekanik yang baik. Magnesium dalam aplikasi
teknik biasanya di padukan dengan unsur seperti Al, Ag, Mn, Zn,
Si, Zr dan RE (rare element). Pada penelitian ini telah dilakukan
proses pemaduan sistem Mg-Zn-Ca dengan menggunakan
variabel komposisi Ca yaitu 0 wt.%; 0.5 wt.%; 1.5 wt.%; dan 3
wt.%Ca terhadap paduan awal Mg-6Zn. Hasil penelitian
menunjukkan struktur mikro yang terbentuk adalah αMg, MgZn,
Mg2Ca, dan Mg6Zn3Ca2. Penambahan 3 wt.% Ca menghasilkan
paduan paling stabil pada temperatur tinggi. Adanya fasa
Mg6Zn3Ca2menaikkan nilai kekerasan menjadi 74,05 BHN.
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Magnesium alloys are widely applied in the automotive world
cars or motorcycles and aircraft engines. This is because the
weight of the magnesium itself is very lightweight and have high
strength. And magnesium alloys have good thermal conductivity,
high elastic modulus and good mechanical properties.
Magnesium in engineering applications is usually in the mix with
elements such as Al, Ag, Mn, Zn, Si, Zr and RE (rare element).
This research has been carried out the integration process of the
Mg - Zn – Ca system by using variable Ca compositions are 0 wt .
% ; 0.5 wt . % ; 1.5 wt . % ; and 3 wt . % Ca on Mg-6Zn alloy .
The results showed microstructures formed are α Mg , MgZn ,
Mg2Ca , and Mg6Zn3Ca2 . The addition of 3 wt . % Ca produces
the most stable alloy at high temperatures . The existence of
Mg6Zn3Ca2 phase increase the hardness value to be 74.05 BHN.
Item Type: | Thesis (Undergraduate) |
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Additional Information: | RMSt 620.118 Tri p |
Uncontrolled Keywords: | Paduan Mg; Mg-Zn-Ca; Enggine Block |
Subjects: | T Technology > TN Mining engineering. Metallurgy > TN690 Metallography. Physical metallurgy |
Divisions: | Faculty of Industrial Technology > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis |
Depositing User: | - Taufiq Rahmanu |
Date Deposited: | 01 Nov 2018 03:03 |
Last Modified: | 01 Nov 2018 03:03 |
URI: | http://repository.its.ac.id/id/eprint/59925 |
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