The influence of deformation, annealing and recrystallisation on oxide nanofeatures in oxide dispersion strengthened steel

Dawson, Karl ORCID: 0000-0003-3249-8328 and Tatlock, Gordon J (2017) The influence of deformation, annealing and recrystallisation on oxide nanofeatures in oxide dispersion strengthened steel. JOURNAL OF NUCLEAR MATERIALS, 486. pp. 361-368.

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Abstract

This work demonstrates that Y-Ti oxide nanofeatures, observed in as-extruded oxide dispersion strengthened steel, are structurally modified by cold forging. A 950 °C heat treatment promoted restructuring of the deformed particles and partial recrystallisation of the cold forged alloy. Transmission electron microscopy revealed that cuboid shaped nanofeatures were deformed during forging, which resulted in high number densities of lens shaped yttrium-titanium oxide particles. Annealing the forged alloy promoted partial recrystallisation of the ferritic matrix. Particle morphology reverted from lens shaped, as witnessed in the deformed material, to cuboid shaped oxide nanofeatures, identical to those observed in as-extruded material. Precipitation distributions evaluated in both recrystallised and recovering grains were indistinguishable from those first measured in the as-extruded alloy. TEM images revealed a widespread orientation relationship between the oxide precipitates and the recrystallised grains; registration with the ferrite lattice was omnipresent in both recovering and recrystallised grains.

Item Type:	Article
Additional Information:	publisher: Elsevier articletitle: The influence of deformation, annealing and recrystallisation on oxide nanofeatures in oxide dispersion strengthened steel journaltitle: Journal of Nuclear Materials articlelink: http://dx.doi.org/10.1016/j.jnucmat.2017.01.034 content_type: article copyright: © 2017 Elsevier B.V. All rights reserved.
Depositing User:	Symplectic Admin
Date Deposited:	10 Apr 2017 09:50
Last Modified:	19 Jan 2023 07:15
DOI:	10.1016/j.jnucmat.2017.01.034
Related URLs:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3006035