Atomically resolved chemical ordering at the nm-thick TiO precipitate/matrix interface in V-4Ti-4Cr alloy

Andrea Impagnatiello; David Hernandez-Maldonado; Giacomo Bertali; Eric Prestat; Demi Kepaptsoglou; Quentin Ramasse; Sarah Haigh; Enrique Jimenez-Melero

doi:10.1016/j.scriptamat.2016.08.016

Atomically resolved chemical ordering at the nm-thick TiO precipitate/matrix interface in V-4Ti-4Cr alloy

Andrea Impagnatiello, David Hernandez-Maldonado, Giacomo Bertali, Eric Prestat, Demi Kepaptsoglou, Quentin Ramasse, Sarah Haigh, Enrique Jimenez-Melero

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Abstract

We have used advanced analytical electron microscopy to characterise the local structure and chemistry at the interface between nm-thick TiO precipitates and the V-based matrix in a V-4Ti-4Cr alloy. Our results reveal the presence of an intergrowth between the fcc TiO and bcc vanadium structures, with a repeat lattice distance that equals 2.5 times the vanadium lattice parameter along the c-axis. Our atomic resolution analysis of the interface will impact the mechanistic understanding of its interaction with interstitials and radiation-induced lattice
defects, and consequently trigger the development of improved alloy structures with interfaces engineered for enhanced radiation tolerance.

Original language	English
Pages (from-to)	50-54
Number of pages	5
Journal	Scripta Materialia
Volume	126
Early online date	30 Aug 2016
DOIs	https://doi.org/10.1016/j.scriptamat.2016.08.016
Publication status	Published - 1 Jan 2017

Keywords

Refractory metal
Crystalline oxides
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.2016.08.016

46758977.SMM-S-16-01493Accepted author manuscript, 527 KB

Next Generation Multi-Dimensional X-ray Imaging
Withers, P. (PI), Burke, G. (CoI), Cernik, R. (CoI), Haigh, S. (CoI), Lee, P. (CoI) & Lionheart, W. (CoI)
1/02/15 → 31/01/20
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title = "Atomically resolved chemical ordering at the nm-thick TiO precipitate/matrix interface in V-4Ti-4Cr alloy",

abstract = "We have used advanced analytical electron microscopy to characterise the local structure and chemistry at the interface between nm-thick TiO precipitates and the V-based matrix in a V-4Ti-4Cr alloy. Our results reveal the presence of an intergrowth between the fcc TiO and bcc vanadium structures, with a repeat lattice distance that equals 2.5 times the vanadium lattice parameter along the c-axis. Our atomic resolution analysis of the interface will impact the mechanistic understanding of its interaction with interstitials and radiation-induced latticedefects, and consequently trigger the development of improved alloy structures with interfaces engineered for enhanced radiation tolerance.",

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

author = "Andrea Impagnatiello and David Hernandez-Maldonado and Giacomo Bertali and Eric Prestat and Demi Kepaptsoglou and Quentin Ramasse and Sarah Haigh and Enrique Jimenez-Melero",

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AU - Impagnatiello, Andrea

AU - Hernandez-Maldonado, David

AU - Bertali, Giacomo

AU - Prestat, Eric

AU - Kepaptsoglou, Demi

AU - Ramasse, Quentin

AU - Haigh, Sarah

AU - Jimenez-Melero, Enrique

PY - 2017/1/1

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AB - We have used advanced analytical electron microscopy to characterise the local structure and chemistry at the interface between nm-thick TiO precipitates and the V-based matrix in a V-4Ti-4Cr alloy. Our results reveal the presence of an intergrowth between the fcc TiO and bcc vanadium structures, with a repeat lattice distance that equals 2.5 times the vanadium lattice parameter along the c-axis. Our atomic resolution analysis of the interface will impact the mechanistic understanding of its interaction with interstitials and radiation-induced latticedefects, and consequently trigger the development of improved alloy structures with interfaces engineered for enhanced radiation tolerance.

KW - Refractory metal

KW - Crystalline oxides

KW - Lattice defects

KW - High-resolution electron microscopy

KW - Nuclear fusion reactor

U2 - 10.1016/j.scriptamat.2016.08.016

DO - 10.1016/j.scriptamat.2016.08.016

M3 - Article

SN - 1359-6462

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SP - 50

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JO - Scripta Materialia

JF - Scripta Materialia

ER -

Atomically resolved chemical ordering at the nm-thick TiO precipitate/matrix interface in V-4Ti-4Cr alloy

Abstract

Keywords

Research Beacons, Institutes and Platforms

UN SDGs

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