Nano-oxide precipitation kinetics during the consolidation process of a ferritic oxide dispersion strengthened steel. (November 2020)

• Record Type: Journal Article
• Authors: Spartacus, Gabriel; Malaplate, Joël; De Geuser, Frédéric; Sornin, Denis; Gangloff, Amélie; Guillou, Raphaëlle; Deschamps, Alexis
• Is Part Of: Scripta materialia. Number 188(2020)
• Page Start: 10
• Page End: 15
• Publication Date: 2020-11
• Subjects: Ferritic steels -- Oxide dispersion strengthened (ods) alloy -- Nano-featured alloys (nfa) -- Precipitation kinetics -- Small Angle X-ray Scattering (SAXS); Materials -- Periodicals; Metallurgy -- Periodicals; Metalen; Legeringen; Materiaalkunde; Metals, metalworking and machinery industries; Metals; Electronic journals; 620.11
• DOI: 10.1016/j.scriptamat.2020.07.003
• Languages: English
• ISSNs: 1359-6462

Abstract

Abstract: Oxide Dispersion Strengthened (ODS) steels are candidates for nuclear applications. ODS are produced by mechanical alloying of Fe-14Cr, Y2 O3 and TiH2 powders and consolidation at 1100 °C, resulting in finely dispersed nano-oxides. Their precipitation kinetics has been quantitatively determined by in-situ Small Angle X-ray Scattering during continuous heating up to 1100 °C. Clusters, found in the as-milled state start growing at 450 °C until 1100 °C, while almost no coarsening was recorded during subsequent isothermal annealing. The nano-oxides resulting from these in-situ experiments were found to be representative of those in materials processed by hot isostatic pressing and hot extrusion. Graphical abstract: Image, graphical abstract