Investigating sluggish diffusion in a concentrated solid solution alloy using ion irradiation with in situ TEM
Abstract
Concentrated solid solution alloys (CSAs) – including high entropy alloys – are known for their remarkable mechanical and corrosion resistances with superior tolerance against the deleterious effect of irradiation exposure when compared with pure metals and dilute alloys. To date, however, the mechanisms responsible for such improvements are still unclear and remain a subject of investigation. The present work reports in situ Transmission Electron Microscopy (TEM) study under simultaneous ion irradiation of the face-centred cubic (FCC) FeCrMnNi quaternary CSA, comparing with a non-equiatomic Fe-based alloy, the AISI-348 austenitic stainless steel that has Cr, Ni and Mn as alloying elements. The alloys were irradiated under the same conditions, with 6 keV He+ and 134 keV Xe+ ions at 298 K up to 1.7 x 1017 ions·cm-2 (4 displacements-per-atom or dpa) and 2.7 x 1015 ions·cm-2 (4 dpa), respectively. The nucleation of inert gas bubbles was tracked upon post-irradiation extended annealing up to 673 K. He and Xe bubbles were observed to grow at a rate slightly slower in the CSA. Trends from the bubble size analyses show that the nucleation and growth of inert gas bubbles may be suppressed or delayed in some conditions in the CSA.
- Authors:
-
- Univ. of Huddersfield (United Kingdom); Montanuniversität Leoben, Leoben (Austria)
- Univ. of Huddersfield (United Kingdom)
- Escola Politécnica da Univ. de São Paulo (Brazil)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Publication Date:
- Research Org.:
- Energy Frontier Research Centers (EFRC) (United States). Energy Dissipation to Defect Evolution (EDDE); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1510577
- Alternate Identifier(s):
- OSTI ID: 1547483
- Grant/Contract Number:
- AC05-00OR22725; AC05-06OR23100; 2016/25248-3
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Intermetallics
- Additional Journal Information:
- Journal Volume: 110; Journal Issue: n/a; Journal ID: ISSN 0966-9795
- Publisher:
- Elsevier
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; High-entropy alloys; Irradiation effects; In situ transmission electron microscopy; Diffusion
Citation Formats
Tunes, Matheus A., Le, Hoang, Greaves, Graeme, Schon, Claudio G., Bei, Hongbin, Zhang, Yanwen, Edmondson, Philip D., and Donnelly, Stephen. Investigating sluggish diffusion in a concentrated solid solution alloy using ion irradiation with in situ TEM. United States: N. p., 2019.
Web. doi:10.1016/j.intermet.2019.04.004.
Tunes, Matheus A., Le, Hoang, Greaves, Graeme, Schon, Claudio G., Bei, Hongbin, Zhang, Yanwen, Edmondson, Philip D., & Donnelly, Stephen. Investigating sluggish diffusion in a concentrated solid solution alloy using ion irradiation with in situ TEM. United States. https://doi.org/10.1016/j.intermet.2019.04.004
Tunes, Matheus A., Le, Hoang, Greaves, Graeme, Schon, Claudio G., Bei, Hongbin, Zhang, Yanwen, Edmondson, Philip D., and Donnelly, Stephen. Thu .
"Investigating sluggish diffusion in a concentrated solid solution alloy using ion irradiation with in situ TEM". United States. https://doi.org/10.1016/j.intermet.2019.04.004. https://www.osti.gov/servlets/purl/1510577.
@article{osti_1510577,
title = {Investigating sluggish diffusion in a concentrated solid solution alloy using ion irradiation with in situ TEM},
author = {Tunes, Matheus A. and Le, Hoang and Greaves, Graeme and Schon, Claudio G. and Bei, Hongbin and Zhang, Yanwen and Edmondson, Philip D. and Donnelly, Stephen},
abstractNote = {Concentrated solid solution alloys (CSAs) – including high entropy alloys – are known for their remarkable mechanical and corrosion resistances with superior tolerance against the deleterious effect of irradiation exposure when compared with pure metals and dilute alloys. To date, however, the mechanisms responsible for such improvements are still unclear and remain a subject of investigation. The present work reports in situ Transmission Electron Microscopy (TEM) study under simultaneous ion irradiation of the face-centred cubic (FCC) FeCrMnNi quaternary CSA, comparing with a non-equiatomic Fe-based alloy, the AISI-348 austenitic stainless steel that has Cr, Ni and Mn as alloying elements. The alloys were irradiated under the same conditions, with 6 keV He+ and 134 keV Xe+ ions at 298 K up to 1.7 x 1017 ions·cm-2 (4 displacements-per-atom or dpa) and 2.7 x 1015 ions·cm-2 (4 dpa), respectively. The nucleation of inert gas bubbles was tracked upon post-irradiation extended annealing up to 673 K. He and Xe bubbles were observed to grow at a rate slightly slower in the CSA. Trends from the bubble size analyses show that the nucleation and growth of inert gas bubbles may be suppressed or delayed in some conditions in the CSA.},
doi = {10.1016/j.intermet.2019.04.004},
journal = {Intermetallics},
number = n/a,
volume = 110,
place = {United States},
year = {Thu Apr 18 00:00:00 EDT 2019},
month = {Thu Apr 18 00:00:00 EDT 2019}
}
Web of Science