| About this Abstract |
| Meeting |
Materials Science & Technology 2012
|
| Symposium
|
Materials Issues in Nuclear Waste Management in the 21st Century
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| Presentation Title |
Burst, Ring and Biaxial Creep of Zircaloy Cladding – Applications to Dimensional Change Predictions during Dry Storage
|
| Author(s) |
Boopathy Kombaiah, Chang-Sung Seok, Korukonda Linga Murty |
| On-Site Speaker (Planned) |
Boopathy Kombaiah |
| Abstract Scope |
Predictions of dimensional changes of Zircaloy cladding tubes during dry storage of spent nuclear fuel are complex due to transitions in creep mechanisms as lower stresses and/or temperatures are approached. We summarize the work performed on Zircaloy cladding commonly used in LWRs as thin walled tubing by considering three different types of tests: (i) burst tests and (ii)hoop creep under closed-end internal pressurization, (iii) uniaxial ring tests for characterization of hoop creep properties. Biaxial creep and closed-end internal pressurization burst tests revealed distinct transitions in creep mechanisms from dislocation climb-glide to viscous creep mechanisms as lower stresses are approached. Importance of transitions in creep mechanisms with decreased stress levels in predicting in-service dimensional changes Zircaloy tubing under dry storage conditions is emphasized. We acknowledge the financial support by the United States National Science Foundation grants DMR-0412583 and DMR-0968825, and DOE/NEUP-IRP contract on Fuel Aging during Storage and Transportation. |
| Proceedings Inclusion? |
Planned: |