Review: Pengaruh Perlakuan Panas T4, T5, dan T6 Pada Paduan Aluminium Silikon Magnesium Tembaga (Al-Si-Mg-Cu) Terhadap Struktur Mikro dan Sifat Mekanik Untuk Aplikasi Piston 4 Langkah

Prasetya, Bayu Dwi (2020) Review: Pengaruh Perlakuan Panas T4, T5, dan T6 Pada Paduan Aluminium Silikon Magnesium Tembaga (Al-Si-Mg-Cu) Terhadap Struktur Mikro dan Sifat Mekanik Untuk Aplikasi Piston 4 Langkah. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Penggunaan paduan Al-Si-Mg-Cu untuk material piston 4 langkah menggantikan material berbasis ferrous supaya memperoleh kerja mesin yang efisien karena massa jenis lebih ringan. Paduan aluminium tersebut dapat ditingkatkan sifat mekaniknya dengan memberikan perlakuan panas sebagai pengganti penggunaan unsur tambahan yang banyak. Perlakuan panas meliputi solution treatment – natural aging (T4), artificial aging (T5), dan solution treatment - artificial aging (T6). Efek dilakukan pemanasan, terbentuk persebaran presipitat yang rata. Terbentuknya presipitat yang lazimnya muncul pada paduan Al-Si-Mg-Cu pada perlakuan panas adalah θ-Al2Cu, β-Mg2Si, SAl2CuMg, dan Q-Al5Cu2Mg8Si6 atau sejenisnya. α-Al bertindak sebagai matrik dan disertai persebaran partikel Si. Pada uji microhardness, secara berurutan partikel dengan kekerasan terbesar adalah partkel Si, Q-Al5Cu2Mg8Si6, θ-Al2Cu, β-Mg2Si, dan α-Al. Fasa Q mampu tahan terhadap panas dan sulit untuk berdifusi kembali ke matrik. Jumlah fasa Q bergantung pada penambahan Cu dan Mg. Pemanasan yang mempunyai sifat mekanik optimal adalah pemanasan T6, karena energi yang diterima untuk pembentukan presipitat lebih besar. Bila dibandingkan, indeks kualitas T6 lebih tinggi. ======================================================================= Al-Si-Mg-Cu alloy for 4 stroke piston material replaces ferrous based material in order to obtain efficient engine work due to its lighter density. The aluminium alloy can be improved its mechanical properties by providing heat treatment instead of using the additional elements too much. The heat treatment are solution treatment - natural aging (T4), artificial aging (T5), and solution treatment - artificial aging (T6). The presence of heating makes precipitate regularity. The precipitates which commonly occur in Al-Si-Mg-Cu alloys in heat treatment are θ-Al2Cu, β-Mg2Si, S-Al2CuMg, and QAl5Cu2Mg8Si6 or its kind. α-Al acts as a matrix and is accompanied by the dispersion of Si particles. In the microhardness test, sequentially, the particles with the highest hardness are the Si, QAl5Cu2Mg8Si6, θ-Al2Cu, β-Mg2Si, and α-Al particles. Phase Q can withstand heat, and it is not easy to diffuse back to the matrix. The amount of phase Q depends on the addition of Cu and Mg. Heating that has optimal mechanical properties is T6 heating because the energy received for the formation of precipitates is more considerable compare to T4 and T5. When compared, the T6 quality index is higher.

Item Type: Thesis (Undergraduate)
Uncontrolled Keywords: Perlakuan panas, paduan aluminium, sifat mekanik, struktur mikro, dan piston 4 langkah.
Subjects: T Technology > TN Mining engineering. Metallurgy > TN689+ Physical metallurgy
T Technology > TN Mining engineering. Metallurgy > TN690 Metallography. Physical metallurgy
T Technology > TN Mining engineering. Metallurgy > TN693.M3 Magnesium
T Technology > TN Mining engineering. Metallurgy > TN752.I5 Steel--Heat treatment
T Technology > TN Mining engineering. Metallurgy > TN775 Aluminum alloys--Metallurgy.
T Technology > TN Mining engineering. Metallurgy > TN799.N6 Nickel--Metallurgy
T Technology > TS Manufactures
T Technology > TS Manufactures > TS170 New products. Product Development
T Technology > TS Manufactures > TS171 Product design
T Technology > TS Manufactures > TS233 Sand casting. Metal castings--Thermal properties.
Divisions: Faculty of Industrial Technology > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis
Depositing User: Bayu Dwi Prasetya
Date Deposited: 12 Aug 2020 04:45
Last Modified: 12 Aug 2020 04:45
URI: http://repository.its.ac.id/id/eprint/77638

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