Characterization of quenched-in vacancies in Fe-Al alloys

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F12%3A10127739" target="_blank" >RIV/00216208:11320/12:10127739 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68081723:_____/12:00376993

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.physb.2011.12.122" target="_blank" >http://dx.doi.org/10.1016/j.physb.2011.12.122</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.physb.2011.12.122" target="_blank" >10.1016/j.physb.2011.12.122</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Characterization of quenched-in vacancies in Fe-Al alloys

Popis výsledku v původním jazyce

Physical and mechanical properties of Fe-Al alloys are strongly influenced by atomic ordering and point defects. In the present work positron lifetime (LT) measurements combined with slow positron implantation spectroscopy (SPIS) were employed for an investigation of quenched-in vacancies in Fe-Al alloys with the Al content ranging from 18 to 49 at.%. The interpretation of positron annihilation data was performed using ab-initio theoretical calculations of position parameters. Quenched-in-defects were identified as Fe-vacancies. It was found that the lifetime of positrons trapped at quenched-in defects increases with increasing Al content due to an increasing number of Al atoms surrounding the Fe vacancies. The concentration of quenched-in vacancies strongly increases with increasing Al content from approximate to 10(-5) in Fe82Al18 (i.e. the alloy with the lowest Al content studied) upto approximate to 10(-1) in Fe51Al49 (i.e. the alloy with the highest Al content studied in this work

Název v anglickém jazyce

Characterization of quenched-in vacancies in Fe-Al alloys

Popis výsledku anglicky

Physical and mechanical properties of Fe-Al alloys are strongly influenced by atomic ordering and point defects. In the present work positron lifetime (LT) measurements combined with slow positron implantation spectroscopy (SPIS) were employed for an investigation of quenched-in vacancies in Fe-Al alloys with the Al content ranging from 18 to 49 at.%. The interpretation of positron annihilation data was performed using ab-initio theoretical calculations of position parameters. Quenched-in-defects were identified as Fe-vacancies. It was found that the lifetime of positrons trapped at quenched-in defects increases with increasing Al content due to an increasing number of Al atoms surrounding the Fe vacancies. The concentration of quenched-in vacancies strongly increases with increasing Al content from approximate to 10(-5) in Fe82Al18 (i.e. the alloy with the lowest Al content studied) upto approximate to 10(-1) in Fe51Al49 (i.e. the alloy with the highest Al content studied in this work

Druh

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

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2012

Kód důvěrnosti údajů

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

Název periodika

Physica B: Condensed Matter

ISSN

0921-4526

e-ISSN

—

Svazek periodika

407

Číslo periodika v rámci svazku

14

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

6

Strana od-do

2659-2664

Kód UT WoS článku

000305468000002

EID výsledku v databázi Scopus

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