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Statements

Subject Item
n2:RIV%2F61389005%3A_____%2F12%3A00385160%21RIV13-AV0-61389005
rdf:type
skos:Concept n10:Vysledek
dcterms:description
Al-Pb binary system is a suitable model system for testing liquid phase dispersion strengthening in bulk materials for structural applications. Liquid Pb islands can be finely dispersed in still solid Al matrix due to the substantial difference of melting points. The Al-Pb system prepared by means of Equal Channel Angular Pressing (ECAP) process was investigated by Small-Angle Neutron Scattering technique (SANS) which enables in-situ measurement of size and morphology parameters of Pb inclusions at elevated temperatures. It was observed that the lead particles were elongated roughly in the direction of ECAP. During the subsequent in-situ thermal cycle RT-400 C-RT, the elongated Pb particles transformed to nearly spherical shape. The change of scattering contrast during melting of Pb mapped the transform of the confined lead particles to the liquid phase. The center of the transition region is around 342 degrees C (615K) for both the as-cast and the ECAP deformed samples, which is a significant shift with respect to the free Pb melting point 327 degrees C (600K). For the ECAP sample, the transition is not sharp, indicating a broad size distribution of lead particles. Al-Pb binary system is a suitable model system for testing liquid phase dispersion strengthening in bulk materials for structural applications. Liquid Pb islands can be finely dispersed in still solid Al matrix due to the substantial difference of melting points. The Al-Pb system prepared by means of Equal Channel Angular Pressing (ECAP) process was investigated by Small-Angle Neutron Scattering technique (SANS) which enables in-situ measurement of size and morphology parameters of Pb inclusions at elevated temperatures. It was observed that the lead particles were elongated roughly in the direction of ECAP. During the subsequent in-situ thermal cycle RT-400 C-RT, the elongated Pb particles transformed to nearly spherical shape. The change of scattering contrast during melting of Pb mapped the transform of the confined lead particles to the liquid phase. The center of the transition region is around 342 degrees C (615K) for both the as-cast and the ECAP deformed samples, which is a significant shift with respect to the free Pb melting point 327 degrees C (600K). For the ECAP sample, the transition is not sharp, indicating a broad size distribution of lead particles.
dcterms:title
Investigation of metal-matrix composite containing liquid-phase dispersion Investigation of metal-matrix composite containing liquid-phase dispersion
skos:prefLabel
Investigation of metal-matrix composite containing liquid-phase dispersion Investigation of metal-matrix composite containing liquid-phase dispersion
skos:notation
RIV/61389005:_____/12:00385160!RIV13-AV0-61389005
n10:predkladatel
n12:ico%3A61389005
n3:aktivita
n13:P n13:I
n3:aktivity
I, P(FR-TI1/378)
n3:cisloPeriodika
012098
n3:dodaniDat
n4:2013
n3:domaciTvurceVysledku
n8:2458985
n3:druhVysledku
n14:J
n3:duvernostUdaju
n18:S
n3:entitaPredkladatele
n16:predkladatel
n3:idSjednocenehoVysledku
142910
n3:idVysledku
RIV/61389005:_____/12:00385160
n3:jazykVysledku
n9:eng
n3:klicovaSlova
metal-matrix composite; liquid-phase dispersion; strengthening; neutron diffraction
n3:klicoveSlovo
n7:metal-matrix%20composite n7:strengthening n7:neutron%20diffraction n7:liquid-phase%20dispersion
n3:kodStatuVydavatele
GB - Spojené království Velké Británie a Severního Irska
n3:kontrolniKodProRIV
[77294D34ECF2]
n3:nazevZdroje
Journal of Physics: Conference Series
n3:obor
n15:BM
n3:pocetDomacichTvurcuVysledku
1
n3:pocetTvurcuVysledku
5
n3:projekt
n17:FR-TI1%2F378
n3:rokUplatneniVysledku
n4:2012
n3:svazekPeriodika
340
n3:tvurceVysledku
Rösler, J. Strunz, Pavel Mukherji, D. Gilles, R. Geue, T.
n3:wos
000301288200098
s:issn
1742-6588
s:numberOfPages
15