A Preliminary Study on the Development of La₂O₃-Bearing Nanostructured Ferritic Steels via High Energy Ball Milling

Authors

Somayeh Pasebani, University of Idaho
Indrajit Charit, University of Idaho
Darryl P. Butt, Boise State UniversityFollow
James I. Cole, Idaho National Laboratory

Document Type

Article

Publication Date

3-1-2013

Abstract

Elemental powder mixture of Fe-Cr-Ti-Mo and La₂O₃ were ball milled for different milling times in a high energy shaker mill. Effects of ball milling time on crystallite size, particle size and hardness were investigated using X-ray diffraction (XRD), scanning electron microscopy (SEM) and microhardness tester. After 10 hours of ball milling, the smallest crystallite size and highest hardness were ∼24 nm and ∼970 HV, respectively. Transmission electron microscopy (TEM) studies have revealed nanoscale features 2-5 nm in diameter present in the milled powder. Local atom probe tomography studies have shown that these nanoscale features were possibly nanoclusters enriched in La, TiO and O.

Publication Information

Pasebani, Somayeh; Charit, Indrajit; Butt, Darryl P.; and Cole, James I.. (2013). "A Preliminary Study on the Development of La₂O₃-Bearing Nanostructured Ferritic Steels via High Energy Ball Milling". Journal of Nuclear Materials, 434(1-3), 282-286. https://doi.org/10.1016/j.jnucmat.2012.11.020