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Statements

Subject Item
n2:RIV%2F61989100%3A27360%2F13%3A86087945%21RIV14-GA0-27360___
rdf:type
skos:Concept n17:Vysledek
dcterms:description
The paper deals with a new approach to measuring and evaluating the chemical micro-heterogeneity of the elements in solidified poly-component metallic systems. The original approach is based on experimental measurements made on the samples taken from characteristic places in a casting and the subsequent application of an original mathematical model for determining the element-distribution profile, characterizing the most probable distribution of an element concentration in the frame of a dendrite, and an original mathematical model for determining the effective partition coefficients of these elements in the structure of the analyzed alloy. The paper also describes an application of this method in the research of the chemical heterogeneity on a cross-section of a CC steel slab and presents the selected results (indices of the heterogeneity and effective partition coefficients of seven analyzed elements) characterizing the chemical micro-heterogeneity on one-half of the cross-section of this CC steel slab. The following main results were obtained: (i) the dendritic heterogeneity of the accompanying elements and impurities is comparatively high; (ii) all the analyzed elements segregate during the solidification into an inter-dendritic melt, and their partition coefficient is smaller than one; (iii) the effective partition coefficients calculated in this new way inherently include both the effect of segregation in the course of an alloy solidification, and the effect of the homogenization occurring during the solidification as well as during the cooling of an alloy. The paper deals with a new approach to measuring and evaluating the chemical micro-heterogeneity of the elements in solidified poly-component metallic systems. The original approach is based on experimental measurements made on the samples taken from characteristic places in a casting and the subsequent application of an original mathematical model for determining the element-distribution profile, characterizing the most probable distribution of an element concentration in the frame of a dendrite, and an original mathematical model for determining the effective partition coefficients of these elements in the structure of the analyzed alloy. The paper also describes an application of this method in the research of the chemical heterogeneity on a cross-section of a CC steel slab and presents the selected results (indices of the heterogeneity and effective partition coefficients of seven analyzed elements) characterizing the chemical micro-heterogeneity on one-half of the cross-section of this CC steel slab. The following main results were obtained: (i) the dendritic heterogeneity of the accompanying elements and impurities is comparatively high; (ii) all the analyzed elements segregate during the solidification into an inter-dendritic melt, and their partition coefficient is smaller than one; (iii) the effective partition coefficients calculated in this new way inherently include both the effect of segregation in the course of an alloy solidification, and the effect of the homogenization occurring during the solidification as well as during the cooling of an alloy.
dcterms:title
A new approach to evaluating the chemical micro-heterogeneity of a continuously cast steel slab A new approach to evaluating the chemical micro-heterogeneity of a continuously cast steel slab
skos:prefLabel
A new approach to evaluating the chemical micro-heterogeneity of a continuously cast steel slab A new approach to evaluating the chemical micro-heterogeneity of a continuously cast steel slab
skos:notation
RIV/61989100:27360/13:86087945!RIV14-GA0-27360___
n17:predkladatel
n18:orjk%3A27360
n4:aktivita
n13:P
n4:aktivity
P(GAP107/11/1566)
n4:cisloPeriodika
1
n4:dodaniDat
n5:2014
n4:domaciTvurceVysledku
n9:5396832 n9:7932235 n9:7383134
n4:druhVysledku
n10:J
n4:duvernostUdaju
n8:S
n4:entitaPredkladatele
n19:predkladatel
n4:idSjednocenehoVysledku
58789
n4:idVysledku
RIV/61989100:27360/13:86087945
n4:jazykVysledku
n14:eng
n4:klicovaSlova
steel; continuous casting; effective partition coefficient; Micro-segregation
n4:klicoveSlovo
n6:continuous%20casting n6:Micro-segregation n6:steel n6:effective%20partition%20coefficient
n4:kodStatuVydavatele
SI - Slovinská republika
n4:kontrolniKodProRIV
[A4F227381F6B]
n4:nazevZdroje
Materiali in tehnologije
n4:obor
n15:JG
n4:pocetDomacichTvurcuVysledku
3
n4:pocetTvurcuVysledku
5
n4:projekt
n7:GAP107%2F11%2F1566
n4:rokUplatneniVysledku
n5:2013
n4:svazekPeriodika
47
n4:tvurceVysledku
Francová, Hana Kavička, František Dobrovská, Jana Stránský, Karel Dobrovská, Věra
n4:wos
000319783400011
s:issn
1580-2949
s:numberOfPages
5
n16:organizacniJednotka
27360