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

Andrea Impagnatiello; Samir De Moraes Shubeita; Paul Wady; Iuliia Ipatova; Huw Dawson; Chiara Barcellini; Enrique Jimenez-Melero

doi:10.1016/j.scriptamat.2016.12.002

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

Andrea Impagnatiello, Samir De Moraes Shubeita, Paul Wady, Iuliia Ipatova, Huw Dawson, Chiara Barcellini, Enrique Jimenez-Melero

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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 0.3dpa and a temperature of 350C. Its formation coincides with the coarsening radiation-induced interstitial a/2⟨111⟩ dislocation loops that are already present at 300C. The dislocation network induced by prior cold work is mostly recovered at 300C and 0.3dpa, 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
Journal	Scripta Materialia
Volume	130
Early online date	9 Dec 2016
DOIs	https://doi.org/10.1016/j.scriptamat.2016.12.002
Publication status	Published - 15 Mar 2017

Keywords

refractory metal
precipitation
lattice defects
High-resolution electron microscopy
Nuclear fusion reactor

Research Beacons, Institutes and Platforms

Advanced materials
Energy

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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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 0.3dpa and a temperature of 350C. Its formation coincides with the coarsening radiation-induced interstitial a/2⟨111⟩ dislocation loops that are already present at 300C. The dislocation network induced by prior cold work is mostly recovered at 300C and 0.3dpa, 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.",

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author = "Andrea Impagnatiello and {De Moraes Shubeita}, Samir and Paul Wady and Iuliia Ipatova and Huw Dawson and Chiara Barcellini and Enrique Jimenez-Melero",

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

language = "English",

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TY - JOUR

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

AU - Impagnatiello, Andrea

AU - De Moraes Shubeita, Samir

AU - Wady, Paul

AU - Ipatova, Iuliia

AU - Dawson, Huw

AU - Barcellini, Chiara

AU - Jimenez-Melero, Enrique

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 0.3dpa and a temperature of 350C. Its formation coincides with the coarsening radiation-induced interstitial a/2⟨111⟩ dislocation loops that are already present at 300C. The dislocation network induced by prior cold work is mostly recovered at 300C and 0.3dpa, 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 0.3dpa and a temperature of 350C. Its formation coincides with the coarsening radiation-induced interstitial a/2⟨111⟩ dislocation loops that are already present at 300C. The dislocation network induced by prior cold work is mostly recovered at 300C and 0.3dpa, 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 - refractory metal

KW - precipitation

KW - lattice defects

KW - High-resolution electron microscopy

KW - Nuclear fusion reactor

U2 - 10.1016/j.scriptamat.2016.12.002

DO - 10.1016/j.scriptamat.2016.12.002

M3 - Article

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

Keywords

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UN SDGs

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