About: Material Engineering characteristics of non-metallic inclusions and their influence on intragranular ferrite nucleation     Goto   Sponge   NotDistinct   Permalink

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  • Je známo, že zjemnění zrna je efektivní cesta zlepšení pevnosti a tažnosti ocelí. Během transformace austenitu na ferit poskytují hranice austenitického zrna efektivnější místa pro tvorbu feritu než jakékoliv vnější povrchy. Bylo známo, že využití nekovových částic, jakožto heterogenních nukleačních míst, je alternativou pro zjemnění zrna. Výsledkem tohoto řešení je vznik mikrostruktury, která je složena z latěk acikulárního feritu (AF), který nukleuse z disperzně rozložených jemných inkluzí/precipitátů. Mikrostruktura je pak charakterizována příznivou kombinací dosažených hodnot jak pevnosti, tak i houževnatosti. Významnou roli mají jemné nekovové inkluze, zejméa o rozměru 0.5-2μm. Doposud nebyl prezentován fyzikálně metalurgický model procesu nukleace AF. Z tohoto důvodu má práce přispět k vysvětlení realizovaných mechanismů (tvorba ochuzené zóny na Mn a precipitace MnS na oxidických částicích MnOSiO2 v oceli, která je deoxidována Mn/Si, které působí jakožto potenciální místa pro nukleace A (cs)
  • Utilization of non-metallic particles as heterogeneous nucleation sites has been found as an alternative way of grain refinement. The result of this solution is microstructure being formed with acicular ferrite (AF) plates nucleated from disperse fine inclusions. This microstructure is characterized with beneficial combination of strength and achieved toughness value. The momentous role of very fine non-metallic inclusions has mostly the dimension lying between 0.5-2μm, usually. Unfortunately, any detailed physical metallurgy model of the AF nucleation process has not been presented up to this time. For this reason, this work is devoted to contribute to the mechanism elucidation (Mn-depleted zone formation and MnS precipitation on oxide particles-MnOSiO2 in steel deoxidized with Mn/Si) of the AF nucleation. Simultaneously, the Mn and S transfer between matrix and precipitates inclusive of the MnS initiation and followed growth of these particles at surface of matrix inclusions are analyzed. T
  • Utilization of non-metallic particles as heterogeneous nucleation sites has been found as an alternative way of grain refinement. The result of this solution is microstructure being formed with acicular ferrite (AF) plates nucleated from disperse fine inclusions. This microstructure is characterized with beneficial combination of strength and achieved toughness value. The momentous role of very fine non-metallic inclusions has mostly the dimension lying between 0.5-2μm, usually. Unfortunately, any detailed physical metallurgy model of the AF nucleation process has not been presented up to this time. For this reason, this work is devoted to contribute to the mechanism elucidation (Mn-depleted zone formation and MnS precipitation on oxide particles-MnOSiO2 in steel deoxidized with Mn/Si) of the AF nucleation. Simultaneously, the Mn and S transfer between matrix and precipitates inclusive of the MnS initiation and followed growth of these particles at surface of matrix inclusions are analyzed. T (en)
Title
  • Material Engineering characteristics of non-metallic inclusions and their influence on intragranular ferrite nucleation
  • Material Engineering characteristics of non-metallic inclusions and their influence on intragranular ferrite nucleation (en)
  • Charakterizace materiálového inženýrství nekovových inkluzí a jejich vliv na nukleaci intragranulárního feritu (cs)
skos:prefLabel
  • Material Engineering characteristics of non-metallic inclusions and their influence on intragranular ferrite nucleation
  • Material Engineering characteristics of non-metallic inclusions and their influence on intragranular ferrite nucleation (en)
  • Charakterizace materiálového inženýrství nekovových inkluzí a jejich vliv na nukleaci intragranulárního feritu (cs)
skos:notation
  • RIV/61989100:27360/07:00015429!RIV08-MPO-27360___
http://linked.open.../vavai/riv/strany
  • 64-64
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(FI-IM3/159)
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 432276
http://linked.open...ai/riv/idVysledku
  • RIV/61989100:27360/07:00015429
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • acicular ferrite; non-metallic inclusions; manganese depleted zone; Al2O3 influence (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...ontrolniKodProRIV
  • [C1618D63AFBA]
http://linked.open...i/riv/mistoVydani
  • Ostrava
http://linked.open...i/riv/nazevZdroje
  • METAL 2007, 16. mezinárodní konference metalurgie a materiálů
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...vavai/riv/projekt
http://linked.open...UplatneniVysledku
http://linked.open...iv/tvurceVysledku
  • Jonšta, Zdeněk
  • Mazancová, Eva
  • Mazanec, Karel
  • Wyslych, Petr
number of pages
http://purl.org/ne...btex#hasPublisher
  • Tanger s.r.o.
https://schema.org/isbn
  • 978-80-86840-33-8
http://localhost/t...ganizacniJednotka
  • 27360
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