STUDY OF THERMAL CREEP OF COATED CLADDING MATERIALS

Authors

  • Martin Ševeček
  • Koroush Shirvan
  • Ronald G. Ballinger

DOI:

https://doi.org/10.14311/APP.2018.19.0022

Keywords:

Accident Tolerant Fuel, Fuel Cladding, Creep, Coating

Abstract

Coated cladding materials are considered as a near-term concept for so-called Accident Tolerant Fuel materials. Their behavior in accidental conditions is mainly studied around the world, however, they need to survive in-reactor normal operation before reaching theoretical accidental conditions. An out-of-pile experiment was designed to study accelerated inward thermal creep and outward displacement of a cladding that occurs after pellet-cladding interaction. Four different materials deposited by the cold-spray technique were studied as well as the reference uncoated one. The results confirm theoretical prediction that due to a mismatch between the fundamental physical properties of each layer, high stresses will build up and the plastic strains expected will lead to coating cracking.

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Published

2018-12-14

Issue

Vol. 19 (2018): ŠIMÁNĚ 2018

Section

Articles

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