ASSESSMENT OF RESIDUAL STRESSES ON U10MO ALLOY BASED MONOLITHIC MINI-PLATES DURING HOT ISOSTATIC PRESSING
This article presents an assessment of the residual stress field on U10Mo alloy based monolithic fuel plates and their elasto-plastic response to the thermo-mechanical fabrication process. Monolithic plate-type fuel for research and test reactors is a new fuel form proposed and developed by Idaho National Laboratory (INL) to accomplish higher uranium densities in the reactor core and allow multi-fold reduction of fuel enrichment. Identification of the 3D residual field is critical for benchmarking the new design and understanding the overall performance of the new plate-type fuels. To define fuel-cladding stress-strain characteristics, a new thermo-mechanical finite element model was developed. Material properties at high temperatures and material plasticity were considered carefully to improve the accuracy as the Hot Pressing temperature reaches the melting temperature of the cladding material. By using elasto-thermo-plastic material models, it was determined that the cladding material (AL6061-TO) is exposed to tensile stress field and exceeds its proportional limits, while the fuel foil (U10Mo) is under compression and remains below its yield limit. It was shown that the residual stresses would govern the overall behavior of the plates, and therefore, should not be neglected. In particular, the simulations have revealed the existence of stress gradients at the fuel/cladding interface, thus emphasizing the necessity of excellent bonding quality at the bond region for mechanical endurance.
- Research Organization:
- Idaho National Lab. (INL), Idaho Falls, ID (United States)
- Sponsoring Organization:
- DOE - NA
- DOE Contract Number:
- DE-AC07-05ID14517
- OSTI ID:
- 1035215
- Report Number(s):
- INL/JOU-11-21753; JNUMAM; TRN: US1200994
- Journal Information:
- Journal of Nuclear Materials, Vol. 419, Issue 1 - 3; ISSN 0022-3115
- Country of Publication:
- United States
- Language:
- English
Similar Records
THE EFFECTS OF FABRICATION INDUCED RESIDUAL STRESS-STRAIN STATES ON THE IRRADIATION PERFORMANCE OF MONOLITHIC MINI-PLATES
EFFECTS OF THE FOIL CENTERING ON THE IRRADIATION PERFORMANCE OF U10MO ALLOY BASED MONOLITHIC MINI-PLATES
Related Subjects
42 ENGINEERING
ACCURACY
ALLOYS
BONDING
COMPRESSION
DESIGN
FABRICATION
FUEL PLATES
HOT PRESSING
IDAHO NATIONAL LABORATORY
MELTING
PERFORMANCE
PLASTICITY
PLATES
REACTOR CORES
RESEARCH AND TEST REACTORS
RESIDUAL STRESSES
URANIUM
Finite Element Analysis
Hot Isostatic Pressing
Residual Stresses