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All Journal JMPM (Jurnal Material dan Proses Manufaktur) Science and Technology Indonesia
Pramutadi Andi Mustari, Asril
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Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Engineering Environmental Science Materials Science & Nanotechnology Mechanical Engineering Physics

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Corrosion Behavior of Modified F/M Steel with Ti and Dispersed Oxides: Y2O3 and ZrO2 Under High Temperature in Static Liquid Lead Setyo Hadi, Dhimas; Wafda, Hakimul; Pramutadi Andi Mustari, Asril; Trisnawan, Veri; Widiawati, Nina; Miftasani, Fitria; Hadi Prajitno, Djoko
Science and Technology Indonesia Vol. 10 No. 3 (2025): July
Publisher : Research Center of Inorganic Materials and Coordination Complexes, FMIPA Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26554/sti.2025.10.3.877-888

Abstract

This study investigates the corrosion resistance of Oxide Dispersion Strengthened (ODS) steel in a lead environment, which is crucial for Lead-Cooled Fast Reactors (LFR), a type of Generation IV nuclear reactor. To improve corrosion resistance, two types of oxides-yttrium oxide (Y2O3) and zirconium oxide (ZrO2)-were added individually and in combination to the ODS steel. The samples were synthesized via powder metallurgy and characterized using optical microscopy, X-ray diffraction (XRD), scanning electron microscopy with energy-dispersive X-ray spectroscopy (SEM-EDX), and Vickers hardness testing. Corrosion testing was conducted in static liquid lead at 550°C for 75 hours. The results showed that the addition of Y2O3 and ZrO2 significantly refines grain structure, increases hardness, and promotes the formation of stable, protective oxide layers. Particularly, the dual-oxide (Y2O3+ ZrO2) sample exhibited the most uniform and effective oxide barrier, indicating improved resistance to lead corrosion. These findings demonstrate that dual-oxide dispersion is a promising strategy for improving the durability of structural materials in LFR applications.
Development of Standard Test Specimens for Competency Improvement of Non-destructive Test (NDT) Personnel—Industrial Radiography Sutanto, Jepri; Iswanto, Iswanto; Sumirat, Iwan; Pramutadi Andi Mustari, Asril; Permana, Sidik
JMPM (Jurnal Material dan Proses Manufaktur) Vol. 9 No. 2 (2025): December
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jmpm.v9i2.26290

Abstract

Test specimens made of low-carbon SS400 steel in the form of plates and pipes will be manufactured for use by certification and training institutions. Currently, test specimens in Indonesia are imported, resulting in higher operational costs. Therefore, the domestic fabrication of test specimens is conducted to address this issue and improve the competency of NDT personnel. Radiographic techniques are applied to evaluate defects and verify acceptance criteria. Plate specimens with a geometry of 350 mm x 200 mm and pipes with a diameter of 2 "(50.8 mm) were welded using SMAW (Shielded Metal Arc Welding). Radiographic examinations revealed porosity and incomplete penetration (IP) defects on the plate specimens and four types of weld discontinuities on the pipe specimens: porosity, IP, external undercut, and spatter. The resulting density follows the acceptance standard, namely 2.12 on the plates and 1.91 on the pipes. Future evaluation using digital radiography methods such as computed radiography (CR) and digital detector arrays (DDA) is required to align with current technological advancements.
Co-Authors Hadi Prajitno, Djoko Iswanto Iswanto Iwan Sumirat Miftasani, Fitria Setyo Hadi, Dhimas Sidik, Adi Permana Sutanto, Jepri Trisnawan, Veri Wafda, Hakimul Widiawati, Nina