From Micro to Nano Materials Characterization Methods for Testing of Nuclear Core and Structural Materials

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26722445%3A_____%2F17%3AN0000141" target="_blank" >RIV/26722445:_____/17:N0000141 - isvavai.cz</a>

Result on the web

<a href="http://susen2020.cz/en/nuclear-technologies-for-21st-century-international-conference-in-rez/" target="_blank" >http://susen2020.cz/en/nuclear-technologies-for-21st-century-international-conference-in-rez/</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

From Micro to Nano Materials Characterization Methods for Testing of Nuclear Core and Structural Materials

Original language description

Zirconium-based nuclear fuel claddings act as a barrier against release of fuel particles into the coolant water during plant operation, handling and dry storage of the spent fuel rods. One part of CVR´s long-term investigation of Zr-claddings contributes to the characterization of materials behaviour under different conditions by means of standard as well as advanced methods of specimen preparation and microscopy investigation. Microstructure studies are currently focused on creep behaviour of non-irradiated Zralloys. In the microstructure of Zr-1Nb cladding, which is the one of examined alloys, hydrides can be significantly studied by Light, Scanning as well as Transmission Electron Microscopy. Within these studies, no radial hydride distributions have been observed in specimens after subjection to internal pressure of 55 MPa at 530°C up to 30 hours exposure time. SEM particularly contributes to observe the hydrides in α-Zr phase matrix in detail. Characteristic micrographs of hydride orientation can be obtained by EBSD technique. The methodology for in-situ SEM-EBSD at mechanical testing are going to be developed. Wave Dispersive Spectroscopy method has been optimized for oxygen profile concentration measurements in order to refine the O-content due to the high affinity of Zralloys to the oxygen. TEM studies on Zr-1Nb cover the hydride location as well as identification of secondary precipitates β-Nb and Laves phase Zr (Nb,Fe)2, interaction of dislocations, degree of recrystallization, with special focus on deformed/ballooned regions after creep.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

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

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

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

Publication year

2017

Confidentiality

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

Article name in the collection

Nuclear Technologies for the 21st Centruy, September 13th 2017

ISBN

978-80-270-3233-4

ISSN

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e-ISSN

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Number of pages

8

Pages from-to

9-16

Publisher name

Centrum výzkumu Řež, s.r.o

Place of publication

Řež

Event location

Řež

Event date

Sep 13, 2017

Type of event by nationality

CST - Celostátní akce

UT code for WoS article

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