Assessment of material properties by lateral compression testing in nuclear grade fuel claddings

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26722445%3A_____%2F18%3AN0000139" target="_blank" >RIV/26722445:_____/18:N0000139 - isvavai.cz</a>

Result on the web

—

DOI - Digital Object Identifier

—

Result language

angličtina

Original language name

Assessment of material properties by lateral compression testing in nuclear grade fuel claddings

Original language description

Claddings act as barriers against fission products release throughout the NPP operation and spent-fuel storage. During the reactor operation and in particular for fast reactors, claddings are subjected to aggressive conditions caused by mechanical stresses at elevated temperatures, corrosion and neutron radiation that will reduce their mechanical strength. There is only very limited data on the evolution of mechanical properties after irradiation due to cost, difficulty of tests on irradiated cladding tubes and lack of standards for testing. There is therefore a need to develop simple, reproducible way to test mechanically irradiated tube sections. Fuel cladding mechanical properties can be estimated by a number of testing techniques and evaluating methodologies. To date there is no standard for testing of fuel claddings due to their geometrical constrains, i.e. tubular product form (approx. 7mm – OD) with thin walls (approx. 0.6 mm). In this work, 24% and 46% cold-worked materials were compressed at room temperature, 300oC, 500oC and 700oC, respectively. Further mathematical analysis and data processing were developed to properly interpret the load-deflection curves. The results show that there were two types of behavior of load-deflection curves, load of the 46% cold-worked materials tested at 300oC and 500oC declined after reaching certain displacement which were in contrast to all the others test conditions. On the other hand, 46% cold-worked materials generally demonstrated higher collapse load among all the test temperatures except those were tested at 700oC. These results might relate to the microstructure differences caused by the different amounts of cold-worked in the materials.

Czech name

—

Czech description

—

Type

D - Article in proceedings

CEP classification

—

OECD FORD branch

20305 - Nuclear related engineering; (nuclear physics to be 1.3);

Project

<a href="/en/project/LQ1603" target="_blank" >LQ1603: Research for SUSEN</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2018

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

The 8th International Conference & Workshop REMOO–2018 May 29-31, 2018

ISBN

978-3-9818275-6-9

ISSN

—

e-ISSN

—

Number of pages

5

Pages from-to

1-5

Publisher name

Get It Published

Place of publication

Erlangen, Germany

Event location

Venice, Italy

Event date

May 29, 2018

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

—