About: The Hexagonal Close-Packed (HCP) a double dagger dagger Face-Centered Cubic (FCC) Transition in Co-Re-Based Experimental Alloys Investigated by Neutron Scattering

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About: The Hexagonal Close-Packed (HCP) a double dagger dagger Face-Centered Cubic (FCC) Transition in Co-Re-Based Experimental Alloys Investigated by Neutron Scattering Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Co-Re-based alloys have been developed to supplement the Ni-base superalloys used in gas turbine applications at high temperatures (1473 K [1200 A degrees C] bare metal temperature). Unlike other commercial Co-based alloys, the Co matrix in the Co-Re alloys has a stable hexagonal close-packed (hcp) structure at room temperature. In situ neutron diffraction measurements on experimental Co-Re alloys hardened by carbide precipitates showed that the matrix undergoes an hcp a double dagger dagger face-centered cubic (fcc) allotropic transformation after heating to high temperatures. Furthermore, it was found that this transformation has a large hysteresis (similar to 100 K). Thermodynamic calculations were undertaken to study the high-temperature phase stability and transformations in the complex multicomponent, multiphase Co-Re-Cr-C system with or without the addition of Ta. The results show that the minor phases (Cr23C6-type carbides and the Cr2Re3-type sigma phase) play an important role in the hcp a double dagger dagger fcc hysteresis by influencing the partitioning of Cr and Re between the matrix and the other phases. Co-Re-based alloys have been developed to supplement the Ni-base superalloys used in gas turbine applications at high temperatures (1473 K [1200 A degrees C] bare metal temperature). Unlike other commercial Co-based alloys, the Co matrix in the Co-Re alloys has a stable hexagonal close-packed (hcp) structure at room temperature. In situ neutron diffraction measurements on experimental Co-Re alloys hardened by carbide precipitates showed that the matrix undergoes an hcp a double dagger dagger face-centered cubic (fcc) allotropic transformation after heating to high temperatures. Furthermore, it was found that this transformation has a large hysteresis (similar to 100 K). Thermodynamic calculations were undertaken to study the high-temperature phase stability and transformations in the complex multicomponent, multiphase Co-Re-Cr-C system with or without the addition of Ta. The results show that the minor phases (Cr23C6-type carbides and the Cr2Re3-type sigma phase) play an important role in the hcp a double dagger dagger fcc hysteresis by influencing the partitioning of Cr and Re between the matrix and the other phases. (en)
Title	The Hexagonal Close-Packed (HCP) a double dagger dagger Face-Centered Cubic (FCC) Transition in Co-Re-Based Experimental Alloys Investigated by Neutron Scattering The Hexagonal Close-Packed (HCP) a double dagger dagger Face-Centered Cubic (FCC) Transition in Co-Re-Based Experimental Alloys Investigated by Neutron Scattering (en)
skos:prefLabel	The Hexagonal Close-Packed (HCP) a double dagger dagger Face-Centered Cubic (FCC) Transition in Co-Re-Based Experimental Alloys Investigated by Neutron Scattering The Hexagonal Close-Packed (HCP) a double dagger dagger Face-Centered Cubic (FCC) Transition in Co-Re-Based Experimental Alloys Investigated by Neutron Scattering (en)
skos:notation	RIV/61389005:_____/12:00384686!RIV13-AV0-61389005
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(FR-TI1/378), Z(AV0Z10480505)
http://linked.open...iv/cisloPeriodika	6
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	138889
http://linked.open...ai/riv/idVysledku	RIV/61389005:_____/12:00384686
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Co-base alloy; neutron diffraction; electron microscopy (en)
http://linked.open.../riv/klicoveSlovo	Co-base alloy electron microscopy neutron diffraction
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[1FAA48AB2651]
http://linked.open...i/riv/nazevZdroje	Metallurgical and Materials Transactions A
http://linked.open...in/vavai/riv/obor	BM
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	7 (xsd:int)
http://linked.open...vavai/riv/projekt	Application of neutron scattering in industry
http://linked.open...UplatneniVysledku	2012
http://linked.open...v/svazekPeriodika	43A
http://linked.open...iv/tvurceVysledku	Gilles, R. Mukherji, D. Piegert, S. Strunz, Pavel Rösler, J. Hofmann, M. Holzel, M.
http://linked.open...ain/vavai/riv/wos	000303457000012
http://linked.open...n/vavai/riv/zamer	Jaderná fyzika a příbuzné obory v základním, aplikovaném a interdisciplinárním výzkumu
issn	1073-5623
number of pages	11 (xsd:int)
http://bibframe.org/vocab/doi	10.1007/s11661-011-1058-4

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