Monolayer-thick TiO precipitation in V-4Cr-4Ti alloy induced by proton irradiation

A. Impagnatiello; S. M. Shubeita; P. T. Wady; I. Ipatova; H. Dawson; C. Barcellini; E. Jimenez-Melero

doi:10.1016/j.scriptamat.2016.12.002

Monolayer-thick TiO precipitation in V-4Cr-4Ti alloy induced by proton irradiation

A. Impagnatiello^*, S. M. Shubeita, P. T. Wady, I. Ipatova, H. Dawson, C. Barcellini, E. Jimenez-Melero

^*Corresponding author for this work

Metallurgy and Materials

Research output: Contribution to journal › Article › peer-review

Abstract

We have characterised to atomic resolution the mono-layer thick TiO-type precipitate induced by proton irradiation in V-4Cr-4Ti alloy at a dose of 0.3 dpa and a temperature of 350 °C. Its formation coincides with the coarsening radiation-induced interstitial a/2〈111〉 dislocation loops that are already present at 300 °C. The dislocation network induced by prior cold work is mostly recovered at 300 °C and 0.3 dpa, and is therefore expected to exert a minimal effect on the precipitate formation. This monolayer-thick precipitate constitutes an early stage in the radiation-induced aging process of V-4Cr-4Ti at low temperatures, and can potentially absorb additional light elements in reactor environments.

Original language	English
Pages (from-to)	174-177
Number of pages	4
Journal	Scripta Materialia
Volume	130
DOIs	https://doi.org/10.1016/j.scriptamat.2016.12.002
Publication status	Published - 15 Mar 2017

Bibliographical note

Funding Information:
We acknowledge the Engineering and Physical Sciences Research Council (EPRSC) (EP/K504178/1) for providing funding for this project via the Centre for Doctoral Training in the Science and Technology of Fusion Energy (http://www.fusion-cdt.ac.uk/). The work described was supported in part by the Dalton Cumbrian Facility Project, a joint initiative of The University of Manchester and the Nuclear Decommissioning Authority. We would also like to thank A.D. Smith and N. Mason for their assistance during the irradiation experiment.

Publisher Copyright:
© 2016 Acta Materialia Inc.

Keywords

High-resolution electron microscopy
Lattice defects
Nuclear fusion reactor
Precipitation
Refractory metal

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys

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10.1016/j.scriptamat.2016.12.002

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title = "Monolayer-thick TiO precipitation in V-4Cr-4Ti alloy induced by proton irradiation",

abstract = "We have characterised to atomic resolution the mono-layer thick TiO-type precipitate induced by proton irradiation in V-4Cr-4Ti alloy at a dose of 0.3 dpa and a temperature of 350 °C. Its formation coincides with the coarsening radiation-induced interstitial a/2〈111〉 dislocation loops that are already present at 300 °C. The dislocation network induced by prior cold work is mostly recovered at 300 °C and 0.3 dpa, and is therefore expected to exert a minimal effect on the precipitate formation. This monolayer-thick precipitate constitutes an early stage in the radiation-induced aging process of V-4Cr-4Ti at low temperatures, and can potentially absorb additional light elements in reactor environments.",

keywords = "High-resolution electron microscopy, Lattice defects, Nuclear fusion reactor, Precipitation, Refractory metal",

author = "A. Impagnatiello and Shubeita, {S. M.} and Wady, {P. T.} and I. Ipatova and H. Dawson and C. Barcellini and E. Jimenez-Melero",

note = "Funding Information: We acknowledge the Engineering and Physical Sciences Research Council (EPRSC) (EP/K504178/1) for providing funding for this project via the Centre for Doctoral Training in the Science and Technology of Fusion Energy (http://www.fusion-cdt.ac.uk/). The work described was supported in part by the Dalton Cumbrian Facility Project, a joint initiative of The University of Manchester and the Nuclear Decommissioning Authority. We would also like to thank A.D. Smith and N. Mason for their assistance during the irradiation experiment. Publisher Copyright: {\textcopyright} 2016 Acta Materialia Inc.",

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doi = "10.1016/j.scriptamat.2016.12.002",

language = "English",

volume = "130",

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TY - JOUR

T1 - Monolayer-thick TiO precipitation in V-4Cr-4Ti alloy induced by proton irradiation

AU - Impagnatiello, A.

AU - Shubeita, S. M.

AU - Wady, P. T.

AU - Ipatova, I.

AU - Dawson, H.

AU - Barcellini, C.

AU - Jimenez-Melero, E.

N1 - Funding Information: We acknowledge the Engineering and Physical Sciences Research Council (EPRSC) (EP/K504178/1) for providing funding for this project via the Centre for Doctoral Training in the Science and Technology of Fusion Energy (http://www.fusion-cdt.ac.uk/). The work described was supported in part by the Dalton Cumbrian Facility Project, a joint initiative of The University of Manchester and the Nuclear Decommissioning Authority. We would also like to thank A.D. Smith and N. Mason for their assistance during the irradiation experiment. Publisher Copyright: © 2016 Acta Materialia Inc.

PY - 2017/3/15

Y1 - 2017/3/15

N2 - We have characterised to atomic resolution the mono-layer thick TiO-type precipitate induced by proton irradiation in V-4Cr-4Ti alloy at a dose of 0.3 dpa and a temperature of 350 °C. Its formation coincides with the coarsening radiation-induced interstitial a/2〈111〉 dislocation loops that are already present at 300 °C. The dislocation network induced by prior cold work is mostly recovered at 300 °C and 0.3 dpa, and is therefore expected to exert a minimal effect on the precipitate formation. This monolayer-thick precipitate constitutes an early stage in the radiation-induced aging process of V-4Cr-4Ti at low temperatures, and can potentially absorb additional light elements in reactor environments.

AB - We have characterised to atomic resolution the mono-layer thick TiO-type precipitate induced by proton irradiation in V-4Cr-4Ti alloy at a dose of 0.3 dpa and a temperature of 350 °C. Its formation coincides with the coarsening radiation-induced interstitial a/2〈111〉 dislocation loops that are already present at 300 °C. The dislocation network induced by prior cold work is mostly recovered at 300 °C and 0.3 dpa, and is therefore expected to exert a minimal effect on the precipitate formation. This monolayer-thick precipitate constitutes an early stage in the radiation-induced aging process of V-4Cr-4Ti at low temperatures, and can potentially absorb additional light elements in reactor environments.

KW - High-resolution electron microscopy

KW - Lattice defects

KW - Nuclear fusion reactor

KW - Precipitation

KW - Refractory metal

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U2 - 10.1016/j.scriptamat.2016.12.002

DO - 10.1016/j.scriptamat.2016.12.002

M3 - Article

AN - SCOPUS:85002649208

SN - 1359-6462

VL - 130

SP - 174

EP - 177

JO - Scripta Materialia

JF - Scripta Materialia

ER -

Monolayer-thick TiO precipitation in V-4Cr-4Ti alloy induced by proton irradiation

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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