About: Characterization of quenched-in vacancies in Fe-Al alloys

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	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 positron 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 10 5 in Fe82Al18 (i.e. the alloy with the lowest Al content studied) up to 10 1 in Fe51Al49 (i.e. the alloy with the highest Al content studied in this work). 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 positron 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 10 5 in Fe82Al18 (i.e. the alloy with the lowest Al content studied) up to 10 1 in Fe51Al49 (i.e. the alloy with the highest Al content studied in this work). (en)
Title	Characterization of quenched-in vacancies in Fe-Al alloys Characterization of quenched-in vacancies in Fe-Al alloys (en)
skos:prefLabel	Characterization of quenched-in vacancies in Fe-Al alloys Characterization of quenched-in vacancies in Fe-Al alloys (en)
skos:notation	RIV/68081723:_____/12:00376993!RIV13-GA0-68081723
http://linked.open...avai/predkladatel	Ústav fyziky materiálů AVČR, v.v.i.
http://linked.open...avai/riv/aktivita	P S Z
http://linked.open...avai/riv/aktivity	P(GAP108/11/1350), P(KAN300100801), S, Z(MSM0021620834)
http://linked.open...iv/cisloPeriodika	14
http://linked.open...vai/riv/dodaniDat	2013
http://linked.open...aciTvurceVysledku	Jirásková, Yvonna
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Ústav fyziky materiálů AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	126833
http://linked.open...ai/riv/idVysledku	RIV/68081723:_____/12:00376993
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Fe-Al alloys; Vacancies; Positron annihilation (en)
http://linked.open.../riv/klicoveSlovo	Vacancies Positron annihilation Fe-Al alloys
http://linked.open...odStatuVydavatele	NL - Nizozemsko
http://linked.open...ontrolniKodProRIV	[026C672596E0]
http://linked.open...i/riv/nazevZdroje	Physica. B
http://linked.open...in/vavai/riv/obor	BM
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	8 (xsd:int)
http://linked.open...vavai/riv/projekt	Multifunctional bulk metallic materials with nanocrystalline and ultrafine-grained structure Effects of cores and boundaries of nanograins on structural and physical properties of ball milled and mechanically alloyed iron-based materials.
http://linked.open...UplatneniVysledku	2012
http://linked.open...v/svazekPeriodika	407
http://linked.open...iv/tvurceVysledku	Anwand, W. Brauer, G. Procházka, I. Kužel, R. Jirásková, Yvonna Janičkovič, D. Lukáč, F. Čížek, J.
http://linked.open...ain/vavai/riv/wos	000305468000002
http://linked.open...n/vavai/riv/zamer	Condensed Matter Physics – New Materials and Technologies
issn	0921-4526
number of pages	7 (xsd:int)
http://bibframe.org/vocab/doi	10.1016/j.physb.2011.12.122
is http://linked.open...avai/riv/vysledek of	Characterization of quenched-in vacancies in Fe-Al alloys

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