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Fe+ ion irradiation effects in Fe-10at%Cr films irradiated at 300 °C

S. Pantousa / K. Mergia / A. Ionescu / E. Manios / S. Dellis / C. Kinane / S. Langridge / A. Caruana / U. Kentsch / S. Messoloras

Fe-Cr alloys constitute the model systems for the investigation of radiation damage effects in ferritic-martensitic steels which are candidate structural materials for fusion reactors. In the current study Fe-10at%Cr alloy films of 70 nm thickness were irradiated by 490 keV Fe + ions at 300 °C at doses ranging from 0.5 up to 20 displacements per atom (dpa). The Fe + ion energy chosen corresponds to the energy of primary Fe(Cr) knock-on atoms from 14 MeV neutrons. The irradiation effects were investigated employing X-ray diffraction and X-ray and polarized neutron reflectivity. The irradiation produced dose dependent: a) lattice constant increase, b) grain size growth and c) Cr depletion in the matrix. These changes occur largely up to 4 dpa and afterwards the system attains a dynamic equilibrium.

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Fe+ ion irradiation effects in Fe-10at%Cr films irradiated at 300 °C

S. Pantousa / K. Mergia / A. Ionescu / E. Manios / S. Dellis / C. Kinane / S. Langridge / A. Caruana / U. Kentsch / S. Messoloras

Fe-Cr alloys constitute the model systems for the investigation of radiation damage effects in ferritic-martensitic steels which are candidate structural materials for fusion reactors. In the current study Fe-10at%Cr alloy films of 70 nm thickness were irradiated by 490 keV Fe + ions at 300 °C at doses ranging from 0.5 up to 20 displacements per atom (dpa). The Fe + ion energy chosen corresponds to the energy of primary Fe(Cr) knock-on atoms from 14 MeV neutrons. The irradiation effects were investigated employing X-ray diffraction and X-ray and polarized neutron reflectivity. The irradiation produced dose dependent: a) lattice constant increase, b) grain size growth and c) Cr depletion in the matrix. These changes occur largely up to 4 dpa and afterwards the system attains a dynamic equilibrium.

Fe+ ion irradiation effects in Fe-10at%Cr films irradiated at 300 °C

S. Pantousa / K. Mergia / A. Ionescu / E. Manios / S. Dellis / C. Kinane / S. Langridge / A. Caruana / U. Kentsch / S. Messoloras

Fe-Cr alloys constitute the model systems for the investigation of radiation damage effects in ferritic-martensitic steels which are candidate structural materials for fusion reactors. In the current study Fe-10at%Cr alloy films of 70 nm thickness were irradiated by 490 keV Fe + ions at 300 °C at doses ranging from 0.5 up to 20 displacements per atom (dpa). The Fe + ion energy chosen corresponds to the energy of primary Fe(Cr) knock-on atoms from 14 MeV neutrons. The irradiation effects were investigated employing X-ray diffraction and X-ray and polarized neutron reflectivity. The irradiation produced dose dependent: a) lattice constant increase, b) grain size growth and c) Cr depletion in the matrix. These changes occur largely up to 4 dpa and afterwards the system attains a dynamic equilibrium.

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Title:

Fe+ ion irradiation effects in Fe-10at%Cr films irradiated at 300 °C

Contributors:

S. Pantousa (author) / K. Mergia (author) / A. Ionescu (author) / E. Manios (author) / S. Dellis (author) / C. Kinane (author) / S. Langridge (author) / A. Caruana (author) / U. Kentsch (author) / S. Messoloras (author)

Published in:

Nuclear Materials and Energy, Vol 30, Iss , Pp 101147- (2022)

Publication date:

2022

ISSN:

DOI:

https://doi.org/10.1016/j.nme.2022.101147

Type of media:

Article (Journal)

Type of material:

Electronic Resource

Language:

Unknown

Keywords:

Fe-Cr alloys , Ion irradiation , Lattice damage , Cr depletion , Polarized neutron reflectivity , Magnetization , Nuclear engineering. Atomic power , TK9001-9401

Metadata by DOAJ is licensed under CC BY-SA 1.0

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