Material selection for accident tolerant fuel cladding
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Alternative cladding materials are being investigated for accident tolerance, which can be defined as >100X improvement (compared to current Zr-based alloys) in oxidation resistance in steam environments at ≥1200°C for short (≤4 h) times. After reviewing a wide range of candidates, current steam oxidation testing is being conducted on Mo, MAX phases and FeCrAl alloys. Recently reported low mass losses for Mo in steam at 800°C could not be reproduced. Both FeCrAl and MAX phase Ti2AlC form a protective alumina scale in steam. Therefore, commercial Ti2AlC that is not single phase, formed a much thicker oxide at 1200°C in steam and significant TiO2, and therefore may be challenging to use as a cladding or a coating. Alloy development for FeCrAl is seeking to maintain its steam oxidation resistance to 1475°C, while reducing its Cr content to minimize susceptibility to irradiation assisted Cr-rich α’ formation. The composition effects and critical limits to retaining protective scale formation at >1400°C are still being evaluated.
- Research Organization:
- Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE Office of Nuclear Energy (NE), Fuel Cycle Technologies (NE-5)
- Grant/Contract Number:
- AC05-00OR22725
- OSTI ID:
- 1155053
- Report Number(s):
- M3FT-14OR0202361; TRN: US1600460
- Journal Information:
- Metallurgical and Materials Transactions. E, Materials for Energy Systems, Vol. 2, Issue 3; ISSN 2196-2936
- Publisher:
- ASM InternationalCopyright Statement
- Country of Publication:
- United States
- Language:
- English
A study of irradiation effects in TiO 2 using molecular dynamics simulation and complementary in situ transmission electron microscopy
|
journal | September 2018 |
Current Thoughts on Reactive Element Effects in Alumina-Forming Systems: In Memory of John Stringer
|
journal | May 2016 |
Similar Records
Development of ODS FeCrAl alloys for accident-tolerant fuel cladding
High Temperature Steam Oxidation Testing of Candidate Accident Tolerant Fuel Cladding Materials