Nanoscale redistribution of alloying elements in high-burnup AXIOM-2 (X2®) and their effects on in-reactor corrosion

Zefeng Yu; Mukesh Bachhav; Fei Teng; Lingfeng He; Adrien Couet

doi:10.1016/j.corsci.2021.109652

Nanoscale redistribution of alloying elements in high-burnup AXIOM-2 (X2®) and their effects on in-reactor corrosion

Zefeng Yu
, Mukesh Bachhav
, Fei Teng
, Lingfeng He
, Adrien Couet

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

13 Scopus citations

Abstract

A comprehensive characterization study was carried out on 1 and 4 cycles X2®, aiming to reveal effect of irradiation-induced alloying element redistribution on the in-reactor corrosion kinetics. Using a combination of (scanning) transmission electron microscopy ((S)/TEM) and atom probe tomography (APT), the results strongly evidenced the existence of Nb-rich native precipitates and irradiation-induced platelets (IIPs)/nanoclusters in both metal and oxide. In addition, the suboxide may reject Nb content back into the metal matrix to achieve a thermodynamic equilibrium state. On the other hand, Fe-rich transition cracks were observed for the first time, along with Fe-rich oxide grain boundaries.

Original language	English
Article number	109652
Journal	Corrosion Science
Volume	190
DOIs	https://doi.org/10.1016/j.corsci.2021.109652
State	Published - Sep 2021

Keywords

APT
Corrosion
Irradiation
Microstructure
TEM
Zirconium

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10.1016/j.corsci.2021.109652

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title = "Nanoscale redistribution of alloying elements in high-burnup AXIOM-2 (X2{\textregistered}) and their effects on in-reactor corrosion",

abstract = "A comprehensive characterization study was carried out on 1 and 4 cycles X2{\textregistered}, aiming to reveal effect of irradiation-induced alloying element redistribution on the in-reactor corrosion kinetics. Using a combination of (scanning) transmission electron microscopy ((S)/TEM) and atom probe tomography (APT), the results strongly evidenced the existence of Nb-rich native precipitates and irradiation-induced platelets (IIPs)/nanoclusters in both metal and oxide. In addition, the suboxide may reject Nb content back into the metal matrix to achieve a thermodynamic equilibrium state. On the other hand, Fe-rich transition cracks were observed for the first time, along with Fe-rich oxide grain boundaries.",

keywords = "APT, Corrosion, Irradiation, Microstructure, TEM, Zirconium",

author = "Zefeng Yu and Mukesh Bachhav and Fei Teng and Lingfeng He and Adrien Couet",

note = "Publisher Copyright: {\textcopyright} 2021 Elsevier Ltd",

year = "2021",

month = sep,

doi = "10.1016/j.corsci.2021.109652",

language = "English",

volume = "190",

journal = "Corrosion Science",

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TY - JOUR

T1 - Nanoscale redistribution of alloying elements in high-burnup AXIOM-2 (X2®) and their effects on in-reactor corrosion

AU - Yu, Zefeng

AU - Bachhav, Mukesh

AU - Teng, Fei

AU - He, Lingfeng

AU - Couet, Adrien

PY - 2021/9

Y1 - 2021/9

N2 - A comprehensive characterization study was carried out on 1 and 4 cycles X2®, aiming to reveal effect of irradiation-induced alloying element redistribution on the in-reactor corrosion kinetics. Using a combination of (scanning) transmission electron microscopy ((S)/TEM) and atom probe tomography (APT), the results strongly evidenced the existence of Nb-rich native precipitates and irradiation-induced platelets (IIPs)/nanoclusters in both metal and oxide. In addition, the suboxide may reject Nb content back into the metal matrix to achieve a thermodynamic equilibrium state. On the other hand, Fe-rich transition cracks were observed for the first time, along with Fe-rich oxide grain boundaries.

AB - A comprehensive characterization study was carried out on 1 and 4 cycles X2®, aiming to reveal effect of irradiation-induced alloying element redistribution on the in-reactor corrosion kinetics. Using a combination of (scanning) transmission electron microscopy ((S)/TEM) and atom probe tomography (APT), the results strongly evidenced the existence of Nb-rich native precipitates and irradiation-induced platelets (IIPs)/nanoclusters in both metal and oxide. In addition, the suboxide may reject Nb content back into the metal matrix to achieve a thermodynamic equilibrium state. On the other hand, Fe-rich transition cracks were observed for the first time, along with Fe-rich oxide grain boundaries.

KW - APT

KW - Corrosion

KW - Irradiation

KW - Microstructure

KW - TEM

KW - Zirconium

UR - https://www.scopus.com/pages/publications/85111041454

U2 - 10.1016/j.corsci.2021.109652

DO - 10.1016/j.corsci.2021.109652

M3 - Article

AN - SCOPUS:85111041454

SN - 0010-938X

VL - 190

JO - Corrosion Science

JF - Corrosion Science

M1 - 109652

ER -

Nanoscale redistribution of alloying elements in high-burnup AXIOM-2 (X2®) and their effects on in-reactor corrosion

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Keywords

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