@article{89b60d9fd5c84005b058ad7d7264d318,
title = "Comparative irradiation response of an austenitic stainless steel with its high-entropy alloy counterpart",
abstract = "Two metallic alloys in the quaternary system Fe–Cr–Mn–Ni were irradiated in situ within a transmission electron microscope (TEM) using Xe+ heavy ions in the temperature range of 293–873 K and in the regime of low- (30 keV) and medium-energies (300 keV) with respective maximum doses of around 40 and 140 dpa. The first alloy is the FeCrMnNi high-entropy alloy (HEA) synthesised with the alloying elements close to equimolar composition. The second alloy is a commercial austenitic stainless steel AISI-348 (70.5Fe-17.5Cr-1.8Mn-9.5Ni wt.%), selected as the “low-entropy” counterpart of the FeCrMnNi HEA. Microstructural characterisation was carried out in the TEM with in situ heavy ion irradiation to investigate the role of entropy on radiation induced segregation and precipitation (RIS and RIP). The results demonstrated that among all the irradiation cases investigated, the FeCrMnNi HEA had its random solid solution matrix phase preserved in 80% of the experiments whilst the austenite matrix of the AISI-348 steel underwent RIP in 80% of the cases. It is therefore demonstrated that small differences between two alloys can lead to different radiation responses, confirming the trend that, by tuning the elemental composition superior radiation resistance can be achieved in metallic alloy systems, but emphasising that some of the constitutive core-effects of HEAs are still in need of further confirmation especially when the application of HEAs in energetic particle irradiation environments is considered.",
keywords = "Electron microscopy, Energy systems, High-entropy alloys, Irradiation effects, Microstructure, Transmission",
author = "Tunes, {M. A.} and G. Greaves and H. Bei and Edmondson, {P. D.} and Y. Zhang and Donnelly, {S. E.} and Sch{\"o}n, {C. G.}",
note = "Funding Information: All the authors are grateful to the Engineering and Physical Sciences Research Council (EPSRC) of the United Kingdom for funding of MIAMI-2 under grant number EP/M028283/1 and also for funding from the United Kingdom National Ion Beam Centre (UKNIBC) of which the MIAMI facility is a part. MAT is grateful for a previous funding through the ASTRO fellowship, a United States Department of Energy workforce development program implemented at Oak Ridge National Laboratory through the Oak Ridge Institute for Science and Education under Contract DE-AC05-06OR23100 . CGS acknowledges the financial support from the Brazilian National Research, Technology and Innovation Council (CNPq) under grant 308565/2018–5 . YZ and HB were supported as part of the Energy Dissipation to Defect Evolution (EDDE), an Energy Frontier Research Centre funded by the U.S. Department of Energy, Office of Science, Basic Energy Sciences under contract number DE-AC05-00OR22725 . MAT would like to thank Professor Frank A. Garner (DSL Extreme and Texas A&M University) for assessing this paper and for many discussions on austenitic steels in extreme environments. MAT would like to thank Professor Steve G. Roberts (University of Oxford) and Professor Konstantina Lambrinou (University of Huddersfield) for an accurate evaluation of his PhD thesis [ 81 ] including many valuable suggestions provided during examination which has improved the final revised version of the thesis. Publisher Copyright: {\textcopyright} 2021 Elsevier Ltd Copyright: Copyright 2021 Elsevier B.V., All rights reserved.",
year = "2021",
month = may,
day = "1",
doi = "10.1016/j.intermet.2021.107130",
language = "English",
volume = "132",
journal = "Intermetallics",
issn = "0966-9795",
publisher = "Elsevier Limited",
}
