Texture evolution in Oxide Dispersion Strengthened (ODS) steel tubes during pilgering process

Vakhitova, Elena; Sornin, Denis; Barcelo, Françoise; François, Manuel

doi:10.1016/j.jnucmat.2017.07.002

Cited by 19 publications

(6 citation statements)

References 13 publications

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“…The HE material showed elongated grains ( Fig. 4e and e') certainly displaying a strong <110> texture along the extrusion direction as observed in many studies before [51,52]. Moreover, TEM micrographs show similar sizes and morphologies of the nano-oxides between both conventional processed ODS (HIP/HE) and annealed CP specimens (Fig.…”

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confidence: 70%

Nano-oxide precipitation kinetics during the consolidation process of a ferritic oxide dispersion strengthened steel.

et al. 2020

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Oxide Dispersion Strengthened (ODS) steels are candidates for nuclear applications. ODS are produced by mechanical alloying of Fe-14Cr, Y2O3 and TiH2 powders and consolidation at 1100°C, resulting in finely dispersed nano-oxides. Their precipitation kinetics has been quantitatively determined by in-situ Small Angle X-ray Scattering during continuous heating up to 1100°C. Clusters, found in the as-milled state start growing at 450°C until 1100°C, while almost no coarsening was recorded during subsequent isothermal annealing. The nano-oxides resulting from these in-situ experiments were found to be representative of those in materials processed by hot isostatic pressing and hot extrusion.

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confidence: 70%

Nano-oxide precipitation kinetics during the consolidation process of a ferritic oxide dispersion strengthened steel.

et al. 2020

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“…These temperatures are close to ODS steels data from the literature [20]. The shift to higher temperatures compared to steels without oxide dispersion is also in agreement with the observations on 9 wt% Cr ODS steel [8,10] and ODS EUROFER [21]. The temperatures of the beginning and the end of the transformation are shifted up by about 20°C for the 12Cr ODS compared to the 10Cr ODS.…”

Section: Untransformed Ferrite Highlightsupporting

confidence: 90%

“…Material recovery between rolling passes is necessary, at least to soften the materials and control the grain morphology [8]. Regarding this problem, a ferrito-martensitic grade exhibits the great advantage of a phase transformation at high temperatures which is efficient to recover microstructures [9,10]. Nevertheless, regarding fuel reprocessing envisaged in the SFR framework, low chromium grades are not the most relevant because of their excessive corrosion during fuel acid dissolution.…”

Section: Introductionmentioning

confidence: 99%

Characterization of untransformed ferrite in 10Cr and 12Cr ODS steels

et al. 2021

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HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.

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“…It has been shown by investigation that a cladding tube fabricated by hot extrusion and rolling presents a reduction of creep strength and ductility in the biaxial hoop direction [ 1 , 5 ]. Microstructures with different textures are proven to possess different recrystallization behaviors in ODS steel [ 33 , 34 ]. The anisotropic microstructure obtained via HE always possesses elongated grains, meaning the optimal distribution of texture, which has important influences on the recrystallization behavior [ 34 ].…”

Section: Introductionmentioning

confidence: 99%

“…Microstructures with different textures are proven to possess different recrystallization behaviors in ODS steel [ 33 , 34 ]. The anisotropic microstructure obtained via HE always possesses elongated grains, meaning the optimal distribution of texture, which has important influences on the recrystallization behavior [ 34 ]. Though the HIPed ODS steel tends to possess an isotropic microstructure, further hot or cold working is still an essential step for the fabrication of the final product [ 1 , 26 ].…”

Section: Introductionmentioning

confidence: 99%

Hot Deformation Behavior and Microstructure Evolution of 14Cr ODS Steel

Zhao

et al. 2018

Materials

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Hot deformation tests of 14Cr oxide dispersion strengthened (ODS) steel fabricated by mechanical alloying and hot isostatic pressing (HIP) were performed on a Gleeble-1500D simulator at temperatures ranging from 1050 to 1200 °C with the strain rate range of 0.001−1 s−1. The relationship between the rheological stress and the deformation condition was studied, and a processing map at the true strain of 0.5 was proposed. Microstructure evolution during the deformation process and the effects of deformation conditions on microstructures were also investigated, as well as the stability of nanoparticles. Results show that the 14Cr ODS steel possesses positive strain rate sensitivity. The flow stress increases with the decrease of deformation temperature and the increase of strain rate. The recrystallization process is promoted by the increase of deformation temperature and the reduction of strain rate. Nanoparticles possess excellent stability during the deformation process and are coherent with the matrix.

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Texture evolution in Oxide Dispersion Strengthened (ODS) steel tubes during pilgering process

Cited by 19 publications

References 13 publications

Nano-oxide precipitation kinetics during the consolidation process of a ferritic oxide dispersion strengthened steel.

Nano-oxide precipitation kinetics during the consolidation process of a ferritic oxide dispersion strengthened steel.

Characterization of untransformed ferrite in 10Cr and 12Cr ODS steels

Hot Deformation Behavior and Microstructure Evolution of 14Cr ODS Steel

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