About: Formation of Intermetallics during Reactive Sintering Production of Fe-Al Alloys

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An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

Attributes	Values
rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
rdfs:seeAlso	http://metal2012.tanger.cz/files/proceedings/02/reports/264.pdf
Description	Fe-Al alloys have been known for more than 100 years. Their exceptional oxidation and sulphidation resistance makes them promising for many industrial applications. However, these materials suffer from poor room-temperature ductility and problems during a production by conventional melting metallurgy. Therefore, reactive sintering of iron and aluminium compressed powder mixtures have been proposed as the alternative technology of their production. Unfortunately, this production technology leads to highly porous products. There are many theories why the porosity is so high and all of them deal with the intermetallic phases' formation mechanisms. There are at least three different phases' formation sequences during heating described in the literature. In this work, the in situ high energy X-ray diffraction analysis was carried out during the reactive sintering process and the mechanism of the formation of intermetallics in FeAl25 powder mixture was described during isothermal annealing at 800°C as well as during a slow continuous heating to this temperature. In both cases, no phases are formed prior the melting of aluminium particles. After that, Fe2Al5 and FeAl phases arise. The effect of the intermetallics' formation on the porosity of Fe-Al alloys is discussed. Fe-Al alloys have been known for more than 100 years. Their exceptional oxidation and sulphidation resistance makes them promising for many industrial applications. However, these materials suffer from poor room-temperature ductility and problems during a production by conventional melting metallurgy. Therefore, reactive sintering of iron and aluminium compressed powder mixtures have been proposed as the alternative technology of their production. Unfortunately, this production technology leads to highly porous products. There are many theories why the porosity is so high and all of them deal with the intermetallic phases' formation mechanisms. There are at least three different phases' formation sequences during heating described in the literature. In this work, the in situ high energy X-ray diffraction analysis was carried out during the reactive sintering process and the mechanism of the formation of intermetallics in FeAl25 powder mixture was described during isothermal annealing at 800°C as well as during a slow continuous heating to this temperature. In both cases, no phases are formed prior the melting of aluminium particles. After that, Fe2Al5 and FeAl phases arise. The effect of the intermetallics' formation on the porosity of Fe-Al alloys is discussed. (en)
Title	Formation of Intermetallics during Reactive Sintering Production of Fe-Al Alloys Formation of Intermetallics during Reactive Sintering Production of Fe-Al Alloys (en)
skos:prefLabel	Formation of Intermetallics during Reactive Sintering Production of Fe-Al Alloys Formation of Intermetallics during Reactive Sintering Production of Fe-Al Alloys (en)
skos:notation	RIV/60461373:22310/12:43894306!RIV15-GA0-22310___
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(GBP108/12/G043)
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Novák, Pavel Michalcová, Alena Marek, Ivo
http://linked.open.../riv/druhVysledku	D - Článek ve sborníku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Vysoká škola chemicko-technologická v Praze / Fakulta chemické technologie
http://linked.open...dnocenehoVysledku	136997
http://linked.open...ai/riv/idVysledku	RIV/60461373:22310/12:43894306
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	XRD; reactive sintering; iron aluminide (en)
http://linked.open.../riv/klicoveSlovo	iron aluminide XRD reactive sintering
http://linked.open...ontrolniKodProRIV	[CE5BFFC030B8]
http://linked.open...v/mistoKonaniAkce	Brno
http://linked.open...i/riv/mistoVydani	Ostrava
http://linked.open...i/riv/nazevZdroje	Proceedings of 21st International Conference on Metallurgy and Materials
http://linked.open...in/vavai/riv/obor	JK
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	6 (xsd:int)
http://linked.open...vavai/riv/projekt	Interface controlled properties of micro/nanocrystalline materials for advanced structural applications, biodegradable implants and hydrogen storage
http://linked.open...UplatneniVysledku	2012
http://linked.open...iv/tvurceVysledku	Marek, Ivo Mudrová, Martina Novák, Pavel Michalcová, Alena Saksl, Karel Bednarčík, Josef
http://linked.open...vavai/riv/typAkce	EUR - Evropská
http://linked.open...ain/vavai/riv/wos	000318506500200
http://linked.open.../riv/zahajeniAkce	2012-05-23 (xsd:date)
number of pages	4 (xsd:int)
http://purl.org/ne...btex#hasPublisher	Tanger s.r.o.
https://schema.org/isbn	978-80-87294-29-1
http://localhost/t...ganizacniJednotka	22310

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