About: Vacancy-induced hardening in Fe-Al alloys

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Description	Hardness of Fe-Al alloys shows a non-trivial dependence on chemical composition and thermal treatment of samples and cannot be fully explained by consideration of intermetallic phases formed according to the equilibrium phase diagram of Fe-Al system. Hardening in Fe- Al alloys caused by quenched-in non-equilibrium vacancies was studied in this work. Non- equilibrium vacancies introduced into the alloys by quenching from 1000 C were detected by means of positron annihilation spectroscopy. The concentration of quenched-in vacancies was found to strongly increase with increasing Al content from 105 at.1 in the alloy with cAl = 18 at. % up to 101 at.1 in the alloy with cAl = 45 at. %. Comparison of the vacancy concentration and the Vickers microhardness revealed that hardening is proportional to square root of concentration of quenched-in vacancies. Hardness of Fe-Al alloys shows a non-trivial dependence on chemical composition and thermal treatment of samples and cannot be fully explained by consideration of intermetallic phases formed according to the equilibrium phase diagram of Fe-Al system. Hardening in Fe- Al alloys caused by quenched-in non-equilibrium vacancies was studied in this work. Non- equilibrium vacancies introduced into the alloys by quenching from 1000 C were detected by means of positron annihilation spectroscopy. The concentration of quenched-in vacancies was found to strongly increase with increasing Al content from 105 at.1 in the alloy with cAl = 18 at. % up to 101 at.1 in the alloy with cAl = 45 at. %. Comparison of the vacancy concentration and the Vickers microhardness revealed that hardening is proportional to square root of concentration of quenched-in vacancies. (en)
Title	Vacancy-induced hardening in Fe-Al alloys Vacancy-induced hardening in Fe-Al alloys (en)
skos:prefLabel	Vacancy-induced hardening in Fe-Al alloys Vacancy-induced hardening in Fe-Al alloys (en)
skos:notation	RIV/68081723:_____/13:00421498!RIV14-GA0-68081723
http://linked.open...avai/predkladatel	Ústav fyziky materiálů AVČR, v.v.i.
http://linked.open...avai/riv/aktivita	I P
http://linked.open...avai/riv/aktivity	I, P(GAP108/11/1350)
http://linked.open...iv/cisloPeriodika	1
http://linked.open...vai/riv/dodaniDat	2014
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	113484
http://linked.open...ai/riv/idVysledku	RIV/68081723:_____/13:00421498
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Vacancy; Hardening; Fe-Al alloy (en)
http://linked.open.../riv/klicoveSlovo	Fe-Al alloy Vacancy Hardening
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[B75F173244F5]
http://linked.open...i/riv/nazevZdroje	Journal of Physics: Conference Series
http://linked.open...in/vavai/riv/obor	BM
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	7 (xsd:int)
http://linked.open...vavai/riv/projekt	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	2013
http://linked.open...v/svazekPeriodika	443
http://linked.open...iv/tvurceVysledku	Anwand, W. Brauer, G. Procházka, I. Jirásková, Yvonna Janičkovič, D. Lukáč, F. Čížek, J.
http://linked.open...ain/vavai/riv/wos	000321739400025
issn	1742-6588
number of pages	4 (xsd:int)
http://bibframe.org/vocab/doi	10.1088/1742-6596/443/1/012025

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