Microstructure Evaluation and Rietveld Analysis of Fe-Cr-Al based ODS Alloy using Arc Melt Casting Method
Muhammad Angga Saputra(a)- Andriansyah(b)- Diene Noor Haerani(b)- Rohmad Salam(c)- Muhammad Fakhrudin(d)- Syahfandi Ahda(b)- Bernardus Bandriyana(b)- Tetty Kemala(a)- Nanda Shabrina(b)*

(a) Department of Chemistry, Faculty of Mathematics and Natural Sciences (FMIPA), IPB University

(b) Research Centre for Rector Nuclear Technology (PRTRN), Research and Organization for Nuclear Energy (ORTN), National Research and Innovation Agency of Indonesia (BRIN)

(c) Directorat for nuclear facility management (DPFK), National Research and Innovation Agency of Indonesia (BRIN)

(d) Research Centre for Advanced Material (PRMM), Research Organization for Nanotechnology and Material (ORNM), National Research and Innovation Agency of Indonesia (BRIN)

*nanda.shabrina[at]brin.go.id

Abstract

Fe-Cr-Al-based ODS (Oxide Dispersion Strengthened) alloy emerging as a promising candidate for fuel cladding applications. The ODS steel was fabricated by Arc Melt Casting as alternative method beside the common sintering method. The effect of yttria dispersion (0.5% and 3%) in Fe-Cr-Al matrix was investigated. Crystal structure, microstructure, element analysis and hardness were carried out using XRD (X-Ray Diffraction), Optical Microscopy, SEM-EDS (Scanning Electron Microscopy) and Vickers Hardness Test. Results shows by increasing 3% Y2O3, grain size area decrease 50% following by hardness number increase 23%. Crystal structure identification was analysis by Rietveld analysis using PAN-Analytical Highscore Software. In 0.5% Y2O3 addition, Alumunium-Iron found to be dominant beside Chromium Iron and Chromium. However, the analysis from EDS showed agglomeration of Al and Y2O3.

Keywords: ODS- Fe-Cr-Al- Y2O3- alloy- Arc melt casting

Topic: Material and Process for Innovative Energy Systems