About: Investigation of metal-matrix composite containing liquid-phase dispersion

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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. (en)
Title	Investigation of metal-matrix composite containing liquid-phase dispersion Investigation of metal-matrix composite containing liquid-phase dispersion (en)
skos:prefLabel	Investigation of metal-matrix composite containing liquid-phase dispersion Investigation of metal-matrix composite containing liquid-phase dispersion (en)
skos:notation	RIV/61389005:_____/12:00385160!RIV13-AV0-61389005
http://linked.open...avai/riv/aktivita	I P
http://linked.open...avai/riv/aktivity	I, P(FR-TI1/378)
http://linked.open...iv/cisloPeriodika	012098
http://linked.open...vai/riv/dodaniDat	2013
http://linked.open...aciTvurceVysledku	Strunz, Pavel
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 jaderné fyziky AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	142910
http://linked.open...ai/riv/idVysledku	RIV/61389005:_____/12:00385160
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	metal-matrix composite; liquid-phase dispersion; strengthening; neutron diffraction (en)
http://linked.open.../riv/klicoveSlovo	strengthening liquid-phase dispersion metal-matrix composite neutron diffraction
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[77294D34ECF2]
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	5 (xsd:int)
http://linked.open...vavai/riv/projekt	Application of neutron scattering in industry
http://linked.open...UplatneniVysledku	2012
http://linked.open...v/svazekPeriodika	340
http://linked.open...iv/tvurceVysledku	Gilles, R. Mukherji, D. Strunz, Pavel Rösler, J. Geue, T.
http://linked.open...ain/vavai/riv/wos	000301288200098
issn	1742-6588
number of pages	15 (xsd:int)

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