About: Characterization of fracture in Fe3Al-based alloy using the small punch test

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Description	The small punch tests at constant deflection rate were performed on two Fe3Al-based alloys with additions of niobium and carbon. The purpose was to study the effect of carbides on ductility and fracture behaviour. Three main quantities were evaluated: maximum force, deflection at maximum force and fracture energy. Temperature dependence of these quantities was fully corresponding to the microscopic image of the fractured specimens. Radial cracks were observed at low temperatures, the contraction of the disc thickness was negligible and the fracture surface was characterized by cleavage facets. On the other hand, a circumferential crack clearly separated spherical cap from the rest of specimen at the highest temperatures. Reduction of the specimen thickness was observed as well as the volume analogical to necking in tensile test. Fracture surface had a dimpled appearance. It was proved that both the fracture energy and the deflection at maximum load were greater in the alloy with the greater carbon and that the ductility was not reduced by the presence of niobium carbides. The small punch tests at constant deflection rate were performed on two Fe3Al-based alloys with additions of niobium and carbon. The purpose was to study the effect of carbides on ductility and fracture behaviour. Three main quantities were evaluated: maximum force, deflection at maximum force and fracture energy. Temperature dependence of these quantities was fully corresponding to the microscopic image of the fractured specimens. Radial cracks were observed at low temperatures, the contraction of the disc thickness was negligible and the fracture surface was characterized by cleavage facets. On the other hand, a circumferential crack clearly separated spherical cap from the rest of specimen at the highest temperatures. Reduction of the specimen thickness was observed as well as the volume analogical to necking in tensile test. Fracture surface had a dimpled appearance. It was proved that both the fracture energy and the deflection at maximum load were greater in the alloy with the greater carbon and that the ductility was not reduced by the presence of niobium carbides. (en)
Title	Characterization of fracture in Fe3Al-based alloy using the small punch test Characterization of fracture in Fe3Al-based alloy using the small punch test (en)
skos:prefLabel	Characterization of fracture in Fe3Al-based alloy using the small punch test Characterization of fracture in Fe3Al-based alloy using the small punch test (en)
skos:notation	RIV/68081723:_____/13:00398588!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(GAP108/12/1452)
http://linked.open...iv/cisloPeriodika	1
http://linked.open...vai/riv/dodaniDat	2014
http://linked.open...aciTvurceVysledku	Dobeš, Ferdinand Dymáček, Petr
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	65073
http://linked.open...ai/riv/idVysledku	RIV/68081723:_____/13:00398588
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	iron aluminides; fracture; fracture toughness; small punch test (en)
http://linked.open.../riv/klicoveSlovo	fracture iron aluminides small punch test fracture toughness
http://linked.open...odStatuVydavatele	SK - Slovenská republika
http://linked.open...ontrolniKodProRIV	[A5DDC7FEDDC1]
http://linked.open...i/riv/nazevZdroje	Acta Metallurgica Slovaca Conference
http://linked.open...in/vavai/riv/obor	JG
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...vavai/riv/projekt	Optimizing the high temperature mechanical properties of iron aluminides of Fe3Al type with carbide forming elements
http://linked.open...UplatneniVysledku	2013
http://linked.open...v/svazekPeriodika	3
http://linked.open...iv/tvurceVysledku	Dobeš, Ferdinand Dymáček, Petr
issn	1338-1660
number of pages	8 (xsd:int)
http://bibframe.org/vocab/doi	10.12776/amsc.v3i0.105

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