Dependence of small-angle neutron scattering contrast on the difference in thermal expansions of phases in two-phase alloys

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389005%3A_____%2F09%3A00333204" target="_blank" >RIV/61389005:_____/09:00333204 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/26722445:_____/09:#0000526

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Dependence of small-angle neutron scattering contrast on the difference in thermal expansions of phases in two-phase alloys

Popis výsledku v původním jazyce

Theoretical expressions describing small-angle neutron scattering (SANS) contrast dependence on temperature in the region where no phase-composition changes occur were derived for two-phase Ni superalloys. The theory is based on the difference in thermalexpansion of the two primary phases, gamma and gamma'. The simulations show that the scattering contrast temperature evolution is significant enough to be considered in in situ SANS experiments with superalloys at elevated temperatures. The simulationsperformed show that the magnitude of the scattering contrast at room temperature is firmly connected with the particular shape of the scattering contrast temperature dependence. This fact can be used for determination of the scattering contrast without aknowledge of the compositions of the individual phases. The theoretical expressions derived for scattering contrast were proven experimentally on an Ni-Fe-base alloy, DT706..

Název v anglickém jazyce

Dependence of small-angle neutron scattering contrast on the difference in thermal expansions of phases in two-phase alloys

Popis výsledku anglicky

Theoretical expressions describing small-angle neutron scattering (SANS) contrast dependence on temperature in the region where no phase-composition changes occur were derived for two-phase Ni superalloys. The theory is based on the difference in thermalexpansion of the two primary phases, gamma and gamma'. The simulations show that the scattering contrast temperature evolution is significant enough to be considered in in situ SANS experiments with superalloys at elevated temperatures. The simulationsperformed show that the magnitude of the scattering contrast at room temperature is firmly connected with the particular shape of the scattering contrast temperature dependence. This fact can be used for determination of the scattering contrast without aknowledge of the compositions of the individual phases. The theoretical expressions derived for scattering contrast were proven experimentally on an Ni-Fe-base alloy, DT706..

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BG - Jaderná, atomová a molekulová fyzika, urychlovače

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2009

Kód důvěrnosti údajů

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

Název periodika

Journal of Applied Crystallography

ISSN

0021-8898

e-ISSN

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Svazek periodika

42

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

9

Strana od-do

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Kód UT WoS článku

000271895700001

EID výsledku v databázi Scopus

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