Phase stability of Fe-5at%Cr and Fe-10at%Cr films under Fe+ ion irradiation

K Mergia; E O Tsompopoulou; S Dellis; C H Marrows; I Michelakaki; C Kinane; A Caruana; S Langridge; A P Douvalis; C Cabet; S Messoloras

doi:10.1088/1361-648X/ab69a1

Phase stability of Fe-5at%Cr and Fe-10at%Cr films under Fe⁺ ion irradiation

J Phys Condens Matter. 2020 May 1;32(18):185702. doi: 10.1088/1361-648X/ab69a1.

Authors

K Mergia¹, E O Tsompopoulou, S Dellis, C H Marrows, I Michelakaki, C Kinane, A Caruana, S Langridge, A P Douvalis, C Cabet, S Messoloras

Affiliation

¹ Institute for Nuclear and Radiological Science and Technology, Safety and Energy, National Centre for Scientific Research 'Demokritos', 15310 Agia Paraskevi, Greece.

PMID: 31918418
DOI: 10.1088/1361-648X/ab69a1

Abstract

This work is within the objective of understanding the effects caused to Fe-Cr alloys by fast Fe ion irradiation. As the penetration length of Fe ion is of the order of hundreds of nanometers, 70 nm Fe-5at%C and Fe-10at%Cr films were irradiated at room temperature with 490 keV Fe⁺ ions at increasing fluence corresponding to a maximum damage of 50 displacements per atom (dpa). In Fe-5at%Cr alloy the Cr solute concentration remains unaltered even after a damage of 50 dpa. In the 10at%Cr the Cr solute concentration is reduced, with the increase of damage, asymptotically to a value of 7.2 at%.