About: The effect of segregated sp-impurities on grain-boundary and surface structure, magnetism and embrittlement in nickel

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About: The effect of segregated sp-impurities on grain-boundary and surface structure, magnetism and embrittlement in nickel Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	We present a theoretical study of segregation of sp-elements (Al, Si, P, S,Ga, Ge, As, Se, In, Sn, Sb and Te) at the Sigma5(210) grain boundary (GB) and (210) free surface (FS) in fcc ferromagnetic Ni. Whereas there is a slight enhancement of magnetization at the clean GB and FS with respect to bulk nickel (3–7% and 24%, respectively), the studied impurities entirely kill or strongly reduce ferromagnetism at the GB/FS and in its vicinity so that magnetically dead layers are formed. This effect is due to the hybridization of the impurity sp-states and Ni d-states. We determine the preferred segregation sites at the Sigma5(210) GB for the sp-impurities, their segregation enthalpies and strengthening/embrittling energies with their chemical and mechanical components. We find interstitially segregated Si and P and substitutionally segregated Al as a GB cohesion enhancer and interstitially segregated S, Ge, As, Se and substitutionally segregated Ga, In, Sn, Sb and Te as GB embrittlers in Ni. We present a theoretical study of segregation of sp-elements (Al, Si, P, S,Ga, Ge, As, Se, In, Sn, Sb and Te) at the Sigma5(210) grain boundary (GB) and (210) free surface (FS) in fcc ferromagnetic Ni. Whereas there is a slight enhancement of magnetization at the clean GB and FS with respect to bulk nickel (3–7% and 24%, respectively), the studied impurities entirely kill or strongly reduce ferromagnetism at the GB/FS and in its vicinity so that magnetically dead layers are formed. This effect is due to the hybridization of the impurity sp-states and Ni d-states. We determine the preferred segregation sites at the Sigma5(210) GB for the sp-impurities, their segregation enthalpies and strengthening/embrittling energies with their chemical and mechanical components. We find interstitially segregated Si and P and substitutionally segregated Al as a GB cohesion enhancer and interstitially segregated S, Ge, As, Se and substitutionally segregated Ga, In, Sn, Sb and Te as GB embrittlers in Ni. (en)
Title	The effect of segregated sp-impurities on grain-boundary and surface structure, magnetism and embrittlement in nickel The effect of segregated sp-impurities on grain-boundary and surface structure, magnetism and embrittlement in nickel (en)
skos:prefLabel	The effect of segregated sp-impurities on grain-boundary and surface structure, magnetism and embrittlement in nickel The effect of segregated sp-impurities on grain-boundary and surface structure, magnetism and embrittlement in nickel (en)
skos:notation	RIV/68081723:_____/11:00366251!RIV12-AV0-68081723
http://linked.open...avai/riv/aktivita	P S Z
http://linked.open...avai/riv/aktivity	P(ED1.1.00/02.0068), P(GA202/09/1786), P(GD106/09/H035), P(IAA100100920), P(OC10008), S, Z(AV0Z20410507), Z(MSM0021622410)
http://linked.open...iv/cisloPeriodika	6
http://linked.open...vai/riv/dodaniDat	2012
http://linked.open...aciTvurceVysledku	Všianská, Monika Šob, Mojmír
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	196439
http://linked.open...ai/riv/idVysledku	RIV/68081723:_____/11:00366251
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	grain boundaries; segregation; nickel; embrittlement (en)
http://linked.open.../riv/klicoveSlovo	nickel segregation embrittlement grain boundaries
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[EB79CBB31B9C]
http://linked.open...i/riv/nazevZdroje	Progress in Materials Science
http://linked.open...in/vavai/riv/obor	BM
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	2 (xsd:int)
http://linked.open...vavai/riv/projekt	Central european institute of technology Multiscale design of advanced materials Theoretical studies of grain boundaries with point defects and their aggregates Theoretical and experimental study of interfaces and martensitic phase transformations Strength and magnetism of nanocomposites
http://linked.open...UplatneniVysledku	2011
http://linked.open...v/svazekPeriodika	56
http://linked.open...iv/tvurceVysledku	Šob, Mojmír Všianská, Monika
http://linked.open...ain/vavai/riv/wos	000290697300008
http://linked.open...n/vavai/riv/zamer	Physical properties of advanced materials in relation to their microstructure and processing Physical and chemical properties of advanced materials and structures
issn	0079-6425
number of pages	24 (xsd:int)

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