Stability of nanosized oxides in ferrite under extremely high dose self ion irradiations

E. Aydogan; N. Almirall; G. R. Odette; S. A. Maloy; O. Anderoglu; L. Shao; J. G. Gigax; L. Price; D. Chen; T. Chen; F. A. Garner; Y. Wu; P. Wells; J. J. Lewandowski; D. T. Hoelzer

doi:10.1016/j.jnucmat.2017.01.015

Stability of nanosized oxides in ferrite under extremely high dose self ion irradiations

E. Aydogan, N. Almirall, G. R. Odette, S. A. Maloy, O. Anderoglu, L. Shao, J. G. Gigax, L. Price, D. Chen, T. Chen, F. A. Garner, Y. Wu, P. Wells, J. J. Lewandowski, D. T. Hoelzer

Alloy Behavior & Design

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

58 Scopus citations

Abstract

A nanostructured ferritic alloy (NFA), 14YWT, was produced in the form of thin walled tubing. The stability of the nano-oxides (NOs) was determined under 3.5 MeV Fe⁺² irradiations up to a dose of ∼585 dpa at 450 °C. Transmission electron microscopy (TEM) and atom probe tomography (APT) show that severe ion irradiation results in a ∼25% reduction in size between the unirradiated and irradiated case at 270 dpa while no further reduction within the experimental error was seen at higher doses. Conversely, number density increased by ∼30% after irradiation. This ‘inverse coarsening’ can be rationalized by the competition between radiation driven ballistic dissolution and diffusional NO reformation. No significant changes in the composition of the matrix or NOs were observed after irradiation. Modeling the experimental results also indicated a dissolution of the particles.

Original language	English
Pages (from-to)	86-95
Number of pages	10
Journal	Journal of Nuclear Materials
Volume	486
DOIs	https://doi.org/10.1016/j.jnucmat.2017.01.015
State	Published - Apr 1 2017

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Aydogan, E., Almirall, N., Odette, G. R., Maloy, S. A., Anderoglu, O., Shao, L., Gigax, J. G., Price, L., Chen, D., Chen, T., Garner, F. A., Wu, Y., Wells, P., Lewandowski, J. J., & Hoelzer, D. T. (2017). Stability of nanosized oxides in ferrite under extremely high dose self ion irradiations. Journal of Nuclear Materials, 486, 86-95. https://doi.org/10.1016/j.jnucmat.2017.01.015

@article{76bfd4670101472fbdb6d78328658e5e,

title = "Stability of nanosized oxides in ferrite under extremely high dose self ion irradiations",

abstract = "A nanostructured ferritic alloy (NFA), 14YWT, was produced in the form of thin walled tubing. The stability of the nano-oxides (NOs) was determined under 3.5 MeV Fe+2 irradiations up to a dose of ∼585 dpa at 450 °C. Transmission electron microscopy (TEM) and atom probe tomography (APT) show that severe ion irradiation results in a ∼25% reduction in size between the unirradiated and irradiated case at 270 dpa while no further reduction within the experimental error was seen at higher doses. Conversely, number density increased by ∼30% after irradiation. This {\textquoteleft}inverse coarsening{\textquoteright} can be rationalized by the competition between radiation driven ballistic dissolution and diffusional NO reformation. No significant changes in the composition of the matrix or NOs were observed after irradiation. Modeling the experimental results also indicated a dissolution of the particles.",

author = "E. Aydogan and N. Almirall and Odette, {G. R.} and Maloy, {S. A.} and O. Anderoglu and L. Shao and Gigax, {J. G.} and L. Price and D. Chen and T. Chen and Garner, {F. A.} and Y. Wu and P. Wells and Lewandowski, {J. J.} and Hoelzer, {D. T.}",

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doi = "10.1016/j.jnucmat.2017.01.015",

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T1 - Stability of nanosized oxides in ferrite under extremely high dose self ion irradiations

AU - Aydogan, E.

AU - Almirall, N.

AU - Odette, G. R.

AU - Maloy, S. A.

AU - Anderoglu, O.

AU - Shao, L.

AU - Gigax, J. G.

AU - Price, L.

AU - Chen, D.

AU - Chen, T.

AU - Garner, F. A.

AU - Wu, Y.

AU - Wells, P.

AU - Lewandowski, J. J.

AU - Hoelzer, D. T.

PY - 2017/4/1

Y1 - 2017/4/1

N2 - A nanostructured ferritic alloy (NFA), 14YWT, was produced in the form of thin walled tubing. The stability of the nano-oxides (NOs) was determined under 3.5 MeV Fe+2 irradiations up to a dose of ∼585 dpa at 450 °C. Transmission electron microscopy (TEM) and atom probe tomography (APT) show that severe ion irradiation results in a ∼25% reduction in size between the unirradiated and irradiated case at 270 dpa while no further reduction within the experimental error was seen at higher doses. Conversely, number density increased by ∼30% after irradiation. This ‘inverse coarsening’ can be rationalized by the competition between radiation driven ballistic dissolution and diffusional NO reformation. No significant changes in the composition of the matrix or NOs were observed after irradiation. Modeling the experimental results also indicated a dissolution of the particles.

AB - A nanostructured ferritic alloy (NFA), 14YWT, was produced in the form of thin walled tubing. The stability of the nano-oxides (NOs) was determined under 3.5 MeV Fe+2 irradiations up to a dose of ∼585 dpa at 450 °C. Transmission electron microscopy (TEM) and atom probe tomography (APT) show that severe ion irradiation results in a ∼25% reduction in size between the unirradiated and irradiated case at 270 dpa while no further reduction within the experimental error was seen at higher doses. Conversely, number density increased by ∼30% after irradiation. This ‘inverse coarsening’ can be rationalized by the competition between radiation driven ballistic dissolution and diffusional NO reformation. No significant changes in the composition of the matrix or NOs were observed after irradiation. Modeling the experimental results also indicated a dissolution of the particles.

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DO - 10.1016/j.jnucmat.2017.01.015

M3 - Article

AN - SCOPUS:85009821225

SN - 0022-3115

VL - 486

SP - 86

EP - 95

JO - Journal of Nuclear Materials

JF - Journal of Nuclear Materials

ER -

Stability of nanosized oxides in ferrite under extremely high dose self ion irradiations

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