Microstructure and tensile properties of ODS ferritic steels mechanically alloyed with Fe2Y. (December 2016)

• Record Type: Journal Article
• Authors: Macías-Delgado, J.; Leguey, T.; de Castro, V.; Auger, M.A.; Monge, M.A.; Spätig, P.; Baluc, N.; Pareja, R.
• Is Part Of: Nuclear materials and energy. Volume 9(2016)
• Page Start: 372
• Page End: 377
• Publication Date: 2016-12
• Subjects: Oxide dispersion strengthened steels -- Nanoparticles -- Transmission electron microscopy -- Mechanical properties -- Fe2Y; Nuclear energy -- Periodicals; Nuclear fuels -- Periodicals; Nuclear reactors -- Materials -- Periodicals; Radioactive substances -- Periodicals; 621.4833
• DOI: 10.1016/j.nme.2016.09.019
• Languages: English
• ISSNs: 2352-1791

Abstract

Highlights: An ODS ferritic steel has been produced by mechanical alloying with Fe2 Y. Microstructure shows homogeneous precipitation of Y-Ti nano-oxides. Tensile properties from RT to 973 K are reported. Abstract: An oxide dispersion strengthened ODS ferritic steel has been produced by mechanical alloying of Fe–14Cr–2W–0.2Ti (wt.%) prealloyed powder with 0.55 (wt.%) Fe2 Y intermetallic particles and consolidated by hot isostatic pressing. The microstructure after thermal treatments confirms the homogeneous precipitation of Y-Ti oxides with nanometric sizes. Tensile properties as a function of the testing temperature from room temperature to 973 K have been measured and the results are discussed with respect to similar ODS ferritic steels fabricated by a powder metallurgy route using Y2 O3 powder.