CD Skripsi

PENGARUH MEDIA PENDINGINAN QUENCHING TERHADAP SIFAT AKUSTIK LONCENG BERBAHAN LOGAM PADUAN Al-Cu

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Al-Cu alloys advantageous properties including high strength, corrosion
resistance, and good formability. These attributes render Al-Cu alloys a promising
alternative material for bell fabrication; however, it is imperative to examine the
correlation between their acoustic and mechanical properties. This study
investigates the effect of various quenching media on the acoustic properties,
hardness, and microstructure of Al-Cu alloys, and seeks to establish a relationship
between the acoustic properties and hardness of these alloys. Al-5%Cu alloy was
synthesized by blending pure aluminum and pure copper in specified weight ratios.
Specimens of Al-Cu alloy, shaped into strip plates with dimensions of 125×10×5
mm, were produced using the investment casting technique. The specimens
underwent heat treatment at 530°C for 50 minutes in tempering furnace, followed
by quenching in different media: water, 10W-30 oil, and 20W-50 oil.
Characterization of the specimens was conducted through bump tests, Vickers
hardness measurements, and metallographic analysis. The result shown that a
decrease in cooling rate, from water to 10W-30 oil and 20W-50 oil, results in a
reduction in natural frequency from 440 Hz to 420 Hz, hardness values from 63.281
to 55.997 HVN, and the volume fraction of the Al2Cu phase from 17.182% to
8.408%. A clear trend was observed wherein the natural frequency of the Al-Cu
alloy diminishes as its hardness decreases. These results provide valuable insights
for selecting suitable materials for bell manufacturing to achieve specific acoustic
characteristics.
Keywords: Al-Cu, bells, quenching, cooling media, natural frequency

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Ketersediaan

Informasi Detail

Judul Seri

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No. Panggil

1907113478

Penerbit

Pekanbaru : Universitas Riau - F. Teknik - Teknik Mesin., 2024

Deskripsi Fisik

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Bahasa

Indonesia

ISBN/ISSN

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Klasifikasi

1907113478

Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

TEKNIK MESIN

Info Detail Spesifik

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Pernyataan Tanggungjawab

GUNTUR

Versi lain/terkait

Lampiran Berkas

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