Structural changes of single crystals of low-alloyed tungsten alloys at thermal cycling

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27360%2F12%3A86084259" target="_blank" >RIV/61989100:27360/12:86084259 - isvavai.cz</a>

Result on the web

<a href="http://80.www.sciencedirect.com.dialog.cvut.cz/science/article/pii/S0263436812000224" target="_blank" >http://80.www.sciencedirect.com.dialog.cvut.cz/science/article/pii/S0263436812000224</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ijrmhm.2012.02.001" target="_blank" >10.1016/j.ijrmhm.2012.02.001</a>

Result language

angličtina

Original language name

Structural changes of single crystals of low-alloyed tungsten alloys at thermal cycling

Original language description

Parameters of sub-structure of single crystals of low-alloyed tungsten alloys from the system W-Nb and W-Mo were investigated after thermal cycling in argon protective atmosphere. The mode of thermal cycling of tungsten based single crystals consisted ofheating to the temperature of 2500 degrees C and of cooling to the temperature of 500 degrees C with dwell of 3.5 s at those temperature. It was established with use of X-ray topography, OLM and SEM, that after 100 thermocycles dislocations were re-distributed, sub-boundaries of the 2nd order were "washed away" (disappeared), and the size of sub-grains of the 1st order and their angle disorientations increased - as a result of heat stresses. After 500 thermocycles formation of new boundaries was observed in the structure as a result of polygonisation, i.e. by ordering of dislocations of the same sign. Application of 2000 thermocycles led to an increase of size of new grains and that of their angle disorientations. All the tested sample

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

JG - Metallurgy, metal materials

OECD FORD branch

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Project

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Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2012

Confidentiality

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

Name of the periodical

International Journal of Refractory Metals and Hard Materials

ISSN

0263-4368

e-ISSN

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Volume of the periodical

32

Issue of the periodical within the volume

neuveden

Country of publishing house

GB - UNITED KINGDOM

Number of pages

5

Pages from-to

61-65

UT code for WoS article

000302841400011

EID of the result in the Scopus database

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