Study hydrogen embrittlement and determination of E110 fuel cladding mechanical properties by ring compression testing

5th International Conference Recent Trends in Structural Materials

Namburi, H.K.^1 ; Ottazzi, L.^1,2 ; Chocholousek, M.^1 ; Lomonaco, G.^2 ; Gavelova, P.^1 ; Krejci, J.^3

Centrum Výzkumu e S. R. O., Husinec-e

252 63, Czech Republic^1

GeNERG-DIME/TEC, University of Genova, via all'opera Pia 15/A, Genova

16145, Italy^2

UJP PRAHA A.s., Praha-Zbraslav, Czech Republic^3

关键词: Fracture property;    Hydrogen concentration;    Hydrogen solubility;    Power plant operations;    Ring compression;    Strength experiments;    Stress strain behaviours;    Zirconium-based alloy;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/461/1/012059/pdf
DOI  :  10.1088/1757-899X/461/1/012059

来源: IOP

【 摘 要 】

Zirconium based alloys are commonly used as material for fuel claddings in the light water reactors. Claddings act as first metallic barriers against loss of fission products during the nuclear power plant operation, intermittent storage or final dry storage. The integrity of claddings is always critical issue during reactor operation and during storage of spent fuel. In this work, ring compression testing method developed was applied to study hydrogen embrittlement, to evaluate the stressstrain behaviour and hoop fracture properties of E110 (Zr-based) fuel claddings. The results show that the collapse load and the tensile strength values depend strongly on hydrogen concentration. In particular, tensile strength experiment data shows significant change in its trend after reaching the maximum hydrogen solubility limit.