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All Journal Rekayasa Mesin Specta Journal of Technology Indonesian Applied Physics Letters Jurnal Manajemen Pendidikan Dasar, Menengah dan Tinggi [JMP-DMT] Brilliance: Research of Artificial Intelligence Makara Journal of Technology Metalurgi Inovasi Jurnal Pengabdian Masyarakat (IJPM)
Tanjung, Rifqi Aulia
Kalimantan Institute of Technology
Humanities Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Public Health Social Sciences Other

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Journal : Specta Journal of Technology

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STUDI METODE PENDINGINAN SUPER CEPAT UNTUK PEMBENTUKAN BULK METALLIC GLASSES PADA PADUAN CU45ZR45AL5AG5 Laksono, Andromeda Dwi; Tanjung, Rifqi Aulia
SPECTA Journal of Technology Vol 3 No 2 (2019): SPECTA Journal of Technology
Publisher : LPPM ITK

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35718/specta.v3i2.41

Abstract

Bulk Metallic Glass (BMG) memiliki sifat mekanik, magnetik, kimia dan fisik yang berbeda dengan paduan polikristalin karena susunan internal atomnya yang tidak teratur. Sehingga, BMG memiliki kekuatan mekanik yang baik, kekerasan yang tinggi, ketahanan terhadap aus dan korosi yang tinggi, dan kehalusan permukaan yang baik. Berdasarkan sifat tersebut, BMG memiliki kelayakan yang menjanjikan di bidang industry. Dalam penelitian ini, metode pengecoran cetakan di tembaga digunakan untuk menyiapkan BMG paduan Cu45Zr45Al5Ag5. Paduan dileburkan ulang dengan pendinginan super cepat menggunakan mesin pendingin di bawah temperatur -25 oC. Dengan metode pengecoran cetakan di tembaga, sampel ukuran besar berbentuk batang dipotong dengan diameter 2 mm hingga 4 mm dan panjang 30 mm. Batang kemudian dipotong lagi menjadi spesimen berbentuk cakram. Untuk memastikan apakah sampel adalah BMG atau tidak, sampel dievaluasi dengan Scanning Electron Microscopy (SEM), Energy Dispersion Spectrometer (EDS), Differential Scanning Calorimetry (DSC), Electron Probe X-ray Micro Analyzer (EPMA), dan X -ray Difraction (XRD). Hasilnya dibahas dalam penelitian ini. Kata Kunci: Bulk Metallic Glasses, Cu45Zr45Al5Ag5, Pengecoran Cetakan di Tembaga.
Analysis of Welding Current Variation of SMAW and GTAW Combination Welding with Double V Groove on The Mechanical Properties and Microstructure of SS304 Stainless Steel amalia, lia; Sinambela, Maria Lena; Tanjung, Rifqi Aulia; Awali, Jatmoko
SPECTA Journal of Technology Vol. 7 No. 1 (2023): SPECTA Journal of Technology
Publisher : LPPM ITK

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (448.141 KB) | DOI: 10.35718/specta.v7i1.663

Abstract

In this paper, the combination of shielded metal arc welding (SMAW) and gas tungsten arc welding (GTAW) welding methods are used in a double V groove SS304 10 mm thick plate. Welding current variation of 110A SMAW/120A GTAW, 100A SMAW/130A GTAW, and 90A SMAW/140A GTAW was used to observe the effect of the welding current variation on the tensile strength and microstructure. Tensile test and metallography test were performed to observe the phenomenon. ImageJ software was used for microstructure analysis. The welding current variation resulted in higher tensile strength with the highest current on GTAW method, while a more dispersed and lathy ferrite structure was observed on the microstructure.
Co-Authors Achly, Fariza Hafizh Amatosa, Teodoro A. Anggraini, Febrina Anggraini, Novita Lizza DARMANSYAH . Denny Huldiansyah Dewi, Asti Lolita Fachry Abda El Rahman Harwahyu, Ruki Jatmoko Awali Laksono, Andromeda Dwi LIA AMALIA Lukman Noerochim Lumenta, Vincent Gravie Ebenhaezer Luthfiansyah, Candra Rizki Mabruri, Efendi Munfarida, Siti Muthia Putri Darsini Lubis Nur Salam Pata'allo, Lidya Perbiana Putra, Ade Wahyu Yusariarta Rohmah, Miftakhur - Rudiyanto, Fahmi Sasria, Nia Sendouw, Emmanoela Carissa Sinambela, Maria Lena Solly Aryza Sulistijono Sulistijono Tajalla, Gusti Umindya Nur Thesalonicha, Somalinggi Tubagus Noor Rohmannudin, Tubagus Noor Utama, Dedi Pria Yen, Yee-wen Yunita Triana, Yunita Yusra, Muhammad Izza