Dose rate dependence of Cr precipitation in an ion-irradiated Fe-18Cr alloy
Journal Article
·
· Scripta Materialia
- Univ. of Michigan, Ann Arbor, MI (United States)
- Univ. of California, Santa Barbara, CA (United States)
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
We report precipitation of α' in F - Cr alloys under neutron irradiation is thermodynamically driven while being accelerated by radiation-enhanced diffusion. However, similar alloys under ion irradiation at high dose rates (> 10-4 dpa/s) fail to exhibit α' precipitation. Here, the microstructure of an Fe - 18Cr alloy under ion or neutron-irradiation at 300 °C at dose rates from ~ 10-7 to 10-4 dpa/s was analyzed by atom probe tomography. The steady-state composition content of the clusters depends on the ion irradiation dose and dose rate, confirming the contribution of ballistic mixing in diluting the Cr concentration in non-equilibrium α' precipitates.
- Research Organization:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA); USDOE Office of Nuclear Energy (NE); USDOE Office of Science (SC), Fusion Energy Sciences (FES)
- Grant/Contract Number:
- AC52-07NA27344; FG03-94ER54275; NE0000639
- OSTI ID:
- 1860815
- Alternate ID(s):
- OSTI ID: 22808567
- Report Number(s):
- LLNL-JRNL-832476; 1050231
- Journal Information:
- Scripta Materialia, Journal Name: Scripta Materialia Vol. 16; ISSN 1359-6462
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Removal of Cr(VI) from Wastewater of the Tannery Industry by Functionalized Mesoporous Material
|
journal | November 2019 |
α′ formation kinetics and radiation induced segregation in neutron irradiated 14YWT nanostructured ferritic alloys
|
journal | June 2019 |
Similar Records
Effect of heavy ion irradiation dose rate and temperature on α' precipitation in high purity Fe-18%Cr alloy
Flux effects in precipitation under irradiation simulation of Fe-Cr alloys
Phase instabilities in austenitic steels during particle bombardment at high and low dose rates
Journal Article
·
Thu Mar 24 20:00:00 EDT 2022
· Acta Materialia
·
OSTI ID:1864416
Flux effects in precipitation under irradiation simulation of Fe-Cr alloys
Dataset
·
Mon Oct 13 20:00:00 EDT 2025
·
OSTI ID:3021731
Phase instabilities in austenitic steels during particle bombardment at high and low dose rates
Journal Article
·
Thu Mar 24 20:00:00 EDT 2022
· Materials & Design
·
OSTI ID:1864429