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All Journal Jurnal Spektra Science and Technology Indonesia Jurnal Penelitian Sains Indonesian Journal of Chemistry Majalah Ilmiah Pengkajian Industri Jurnal Ilmu Fisika JAE (Jurnal Akuntansi dan Ekonomi) Technologia: Jurnal Ilmiah ProBisnis : Jurnal Manajemen Makara Journal of Science Jurnal Riset Fisika Indonesia Makara Journal of Technology Jurnal Informatika Software dan Network (JISN) Jurnal Pengabdian Masyarakat Tapis Berseri Journal of Accounting and Finance (JAF) Bulletin of Chemical Reaction Engineering & Catalysis Prosiding Seminar Nasional Unimus E-Amal: Jurnal Pengabdian Kepada Masyarakat Journal of Learning Technology Journal of Software Engineering And Technology Jurnal TAM (Technology Acceptance Model) Berbakti Artificial Intelligence and Computing
Mardiyanto Mardiyanto
Centre for Technology of Industrial Nuclear Materials -BATAN
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Journal : Makara Journal of Technology

 1 
Nano-Channels Early Formation Investigation on Stainless Steel 316Ti after Immersion in Molten Pb-Bi Rivai, Abu Khalid; Mardiyanto, Mardiyanto; Heinzel, Annette
Makara Journal of Technology Vol. 21, No. 1
Publisher : UI Scholars Hub

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Development of fuel cladding and structural materials in Pb-Bi environment, especially at high temperature, is a critical issue for the deployment of LFR (Lead alloy-cooled Fast Reactor) and ADS (Accelerator Driven Transmutation System). This is because of the corrosive characteristic of Pb-Bi to metals as constituent materials of fuel cladding and structural of the reactors. Corrosion test of a high-chromium austenitic stainless steel i.e. SS316Ti in molten Pb-Bi at 550 ºC has been carried out for about 300 hours continuously. The characterization using SEM-EDS (Scanning Electron Microscopy - Energy Dispersive X-ray Spectroscopy) showed that an iron oxide as the outer layer and a chromium oxide as the inner layer on the surface of the specimen were formed which in general have protected the steel specimen from corrosion and dissolution attack of Pb-Bi. However, small amount of Pb could penetrate into the iron oxide layer through ultra-narrow channels. Atomic Force Microscopy (AFM) with Electrostatic Force Microscopy (EFM) mode was employed to investigate the phenomena of the nano-channels early formation. The results of the nano-scale investigation showed clearly the formation of the channels at the early time of corrosion as the way of Pb to penetrate into iron oxide outer layer.
Effects of Plasma Sintering on the Post TIG Weld Joint of Fe-15Cr-25Ni Austenitic Stainless Steel Parikin, Parikin; Dani, Mohammad; Dimyati, Arbi; Insani, Andon; Deswita, Deswita; Aziz, Ferhat; Mardiyanto, Mardiyanto; Mustofa, Salim; Purwanto, Setyo; Adhika, Damar Rastri; Syahbuddin, Syahbuddin; Huang, Ching An
Makara Journal of Technology Vol. 26, No. 1
Publisher : UI Scholars Hub

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Arc-plasma sintering (APS) for 5 s has been applied to the post tungsten inert gas (TIG) weld joint of Fe–15Cr–25Ni austenitic stainless steel (ASS). The treatment is intended to observe the effect of heat generated by plasma on micro-crystal structures around the fusion zone (FZ), especially internal stress relief in steel after being subjected to welding. The effect of stress relief in weld was measured using the neutron diffraction technique. ASS that is predominantly composed of Fe, Cr, and Ni elements, with contents of 57%, 15%, and 25%wt. respectively, was cut into two parts. Both parts were then welded with TIG without filler with a current and voltage of 60 A and 50 V, respectively. After APS for 5 s, the sample was characterized and analyzed using high-resolution powder neutron diffractometer at a high-temperature laboratory facility. The results show that the tensile residual stress decreased with the APS heat input. The residual stresses significantly decreased from 82.40 MPa to 1.21 MPa in the FZ and continued almost evenly from 65.92 MPa to 1.24 MPa in the heat-affected zone (HAZ). The residual stress is a tensile stress that can reduce the mechanical strength of materials. This condition is also applicable to applied loads. A microstructure gives a confirmation that the C element migrates from the FZ to HAZ. The content was very high in dark traces. The C element reacts to Cr and O to form chromium carbide (Cr23C6) and chromium carbonyl (CrC6O6), respectively. It rapidly migrates among its grain boundaries. It may also weaken materials and probably initiate intergranular cracks.
Co-Authors -, Widianto Abu Khalid Rivai Adituri, Adituri Afrizal Martin Agung Budi Susanto Agustian, Rizki Agustiarini, Vitry Agusutrisno Agusutrisno, Agusutrisno Ahmad Khumaidi Ahmad Khumaidi Aldes Lesbani Ambarwati, Vita Amri Amri Andon Insani Andoyo, Andreas Anggara Anggara, Anggara Anggraeni, Elisabet Yunaiti Angraeni, Via Annette Heinzel Apriani, Elsa F. Arbi Dimyati Bambang Sugeng Bery, Winda Surya Budi Untari Chalid, Lukman Damar Rastri Adhika Deswita Deswita Dian Fitriyani Dina Permata Wijaya Edi Suharyadi Eliza Eliza Elvaswer Elvaswer Engkir Sukirman Ferhat Aziz Firana, Ario Hanifah, Yulizah Herlina Herlina Hilman, Amirul Huang, Ching An Idha Royani J, Jeprianto Jeprianto, Jeprianto Joni Joni Lestari, Kanti Martin, Afrizal martin, Afrizal martin Marzuki Silalahi Mawaddah, Zahrul Mohammad Dani Muhamad Muslihudin Mustafa Kamal Nafiah, Nafiah Najma Annuria Fithri, Najma Annuria Nining Handayani Novita Andriyani Nur Ahmad, Nur octavia, yoanda wanda Parikin Parikin Prasetia Nanda, Adi Risfidian Mohadi Rohmatullaili, Rohmatullaili Rosidawati Wiradirja, Imas Salim Mustofa Sari, Familia Maya Setyo Purwanto Shaum Shiyan Sofia Sandi Solihah, Indah Sulistioso G.S, Sulistioso Sulistioso Giat Sukaryo, Sulistioso Giat SURYANTI Syahbuddin Syahbuddin Syahfandi Ahda Syarifudin Syarifudin Taswanda Taryo Tati, Sri Hartati Taufiq, Agus Tri Kusmita Wardhana, Singgih Tri Wibiyan, Sahrul Widianto Widianto Widiyanto Widiyanto Wijaya, Alfan Yuri Fitrian Zarvianti, Enny Zavianti, Enny