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Mechanical Properties Enhancement of Al-Si-Cu-Fe Alloy Through Aging Treatment Variations Moch Iqbal Zaelana Muttahar; Shinta Virdhian; Purbaja Adi Putra; Dagus Resmana Djuanda; Eva Afrilinda; Amsal Genesar
Metalurgi Vol 35, No 3 (2020): Metalurgi Vol. 35 No. 3 Desember2020
Publisher : National Research and Innovation Agency (BRIN)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (513.579 KB) | DOI: 10.14203/metalurgi.v35i3.571

Abstract

Al-Si alloys are being widely used as main engine components replacing iron in several parts in the automotive industry. Some of its mechanical properties were a reference in its alloy utilization. In this research, the heat treatment carried out on the specimen included solid solution treatment and the artificial aging process for aluminium alloys. Test pieces were heated on the furnace with a solid solution treatment process at 540 ° C with holding time around 5 hours and quenched at 60 °C with water quenchant, followed by 3 different aging treatment which included single-stage aging, artificial aging with pre-aged, and double stage aging. Tests carried out by hardness test, tensile strength test, impact test, metallographic and Scanning Electron Microscopy-Energy Dispersive Spectroscopy (SEM-EDS) observations. The results of this research showed the differences in phase constituent and morphology microconstituents due to variations of aging. The difference of each treatment could be seen in the morphology of the precipitate that is dispersed, rounded and needle-like shaped, this phase can influence the mechanical properties of Al-Si-Cu alloys. The results of mechanical testing show the highest hardness was obtained by double stage aging treatment 161.27 HRB. The highest tensile strength occurs in specimens with a single-stage aging treatment of 202.56 MPa. The highest impact resistance occurred in samples with the pre-aging treatment of 18.6 J.
Pengembangan Boogie Wheel Tank AMX-13 untuk Komponen Kendaraan Tempur Tank Jenis Ringan Purbaja Adi Putra; Luky Krisnadi; Moch. Iqbal Zaelana Muttahar; Hafid Abdullah; Dewi Amalia
Jurnal Teknologi Bahan dan Barang Teknik Vol 10, No 2 (2020)
Publisher : Balai Besar Bahan dan Barang Teknik

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37209/jtbbt.v10i2.186

Abstract

Telah dilakukan pengembangan boogie wheel tank AMX-13 untuk komponen kendaraan tempur tank jenis ringan. Tujuan pengembangan yang dilakukan dalam penelitian ini adalah membuat prototip boogie wheel dari material aluminium AC4C (Standar JIS) melalui proses pengecoran dan perlakuan panas sebagai upaya meningkatkan kemampuan teknologi dan produksi industri pertahanan dalam negeri agar dapat membantu mengurangi ketergantungan TNI terhadap impor komponen boogie wheel. Keunggulan dari invensi ini, yaitu: (1) mengurangi berat total tank AMX-13 karena boogie wheel yang dibuat sebelumnya menggunakan material baja, (2) dihasilkan boogie wheel yang mempunyai kekuatan yang setara produk aslinya, dan (3) menurunkan waktu pembuatan dan biaya produksi bila dibandingkan menggunakan proses tempa. Berdasarkan hasil percobaan yang dilakukan diketahui bahwa faktor-faktor yang menentukan kualitas produk boogie wheel yang dibuat adalah: (1) dies boogie wheel, (2) pemaduan material, (3) proses peleburan dan penuangan, dan (4) proses perlakuan panas. Dengan dikuasainya teknologi pengecoran dan perlakuan panas, maka dapat dikembangkan pembuatan boogie wheel untuk jenis tank lainnya.
Co-Authors Amsal Genesar Dagus Resmana Djuanda Dewi Amalia Eva Afrilinda Hafid Abdullah Luky Krisnadi Moch Iqbal Zaelana Muttahar Moch. Iqbal Zaelana Muttahar Shinta Virdhian