Influence of injected interstitials on the void swelling in two structural variants of 304L stainless steel induced by self-ion irradiation at 500 °C
- Idaho National Lab. (INL), Idaho Falls, ID (United States). Materials and Fuels Complex; Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Texas A & M Univ., College Station, TX (United States). Nuclear Engineering Dept.
- Purdue Univ., West Lafayette, IN (United States). School fo Materials Engineering
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
The two variants of AISI 304L stainless steel (SS) with different grain size distributions were ion irradiated at 500 °C to a peak dose of ~60 dpa. In the coarse-grained annealed variant, a peak swelling of ~12% was observed closer to the specimen surface rather than at the depth of peak displacement damage. The forward shift in depth between peak swelling and peak dose is proposed to be a consequence of suppression of void nucleation by injected interstitials. The swelling behavior in the front portion of the ion range mirrors that of neutron-induced swelling in this steel, exhibiting significant curvature with increasing dose as the swelling rate approaches the terminal swelling rate of 1%/dpa. Furthermore, an ultrafine grain variant of this steel produced by severely plastic deformation exhibits a similar suppression of void nucleation in the injected interstitial region, but also shows a significantly extended transient regime, not reaching the terminal swelling rate by 60 dpa.
- Research Organization:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- AC52-06NA25396; AC07-05ID14517-00088120
- OSTI ID:
- 1411343
- Alternate ID(s):
- OSTI ID: 1550477
- Report Number(s):
- LA-UR-16-25849; TRN: US1800211
- Journal Information:
- Nuclear Instruments and Methods in Physics Research. Section B, Beam Interactions with Materials and Atoms, Vol. 409, Issue C; ISSN 0168-583X
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
Ultrastrong nanocrystalline steel with exceptional thermal stability and radiation tolerance
|
journal | December 2018 |
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