Microstructure and tensile properties of ODS ferritic steels mechanically alloyed with Fe2Y Articles uri icon

publication date

  • December 2016

start page

  • 372

end page

  • 377

volume

  • 9

international standard serial number (ISSN)

  • 2352-1791

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.%) Fe2Y 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 Y2O3 powder.

keywords

  • Oxide dispersion strengthened steels; Nanoparticles; Transmission electron microscopy; Mechanical properties; Fe2Y