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|Title: ||An in situ powder neutron diffraction study of nano-precipitate formation during processing of oxide-dispersion-strengthened ferritic steels|
|Authors: ||Zhang, Hongtao|
Gorley, Michael J.
Chong, Kok Boon
Fitzpatrick, Michael E.
Roberts, Steve G.
Grant, Patrick S.
|Keywords: ||Neutron diffraction|
Oxide-dispersion strengthened (ODS) alloy
|Issue Date: ||2013|
|Publisher: ||© Elsevier|
|Citation: ||ZHANG, H. ... et al, 2013. An in situ powder neutron diffraction study of nano-precipitate formation during processing of oxide-dispersion-strengthened ferritic steels. Journal of Alloys and Compounds, 582, pp.769-773|
|Abstract: ||The evolution of phases in a Fe-14Cr-10Y2O3 (wt.%) oxide-dispersion-strengthened ferritic
steel during mechanical alloying (MA) and subsequent annealing was studied by high
resolution powder neutron diffraction, with emphasis on the kinetics of oxide-based nanoprecipitate
formation. Y2O3 particles were almost dissolved into the ferritic matrix during
MA. The formation of nano-precipitates was then observed by in-situ thermo-diffraction
experiments during annealing of as-milled powder above 900oC, supported by scanning
electron microscopy. This revealed nano-precipitate coarsening with increasing annealing
temperature. Powder microhardness was measured at various processing stages, and hardness
changes are discussed in terms of the measured phase fractions, crystallite size and lattice
strain at different temperatures and times.|
|Description: ||This paper was accepted for publication in the Journal of Alloys and Compounds. The final published version is available at: http://dx.doi.org/10.1016/j.jallcom.2013.08.069|
|Version: ||Accepted for publication|
|Publisher Link: ||http://dx.doi.org/10.1016/j.jallcom.2013.08.069|
|Appears in Collections:||Published Articles (Materials)|
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