Influence of Non-ferrous Metals and Rare-Earth Elements on Structural Characteristics of Cr-Mo Steels

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Influence of Non-ferrous Metals and Rare-Earth Elements on Structural Characteristics of Cr-Mo Steels

Popis výsledku v původním jazyce

Theoretical and experimental study on influence of addition of selected non-ferrous metals and mischmetal on microstructural characteristics in special Cr-Mo steels were performed. A number of binary iron - admixture systems were theoretically studied and equilibrium distribution coefficients were recently computed. Cast samples of Cr-Mo steel with Ce addition were prepared using a plasma furnace and an induction furnace. Microstructure investigations of the cast steel samples revealed that the additionof rare-earth metals (REM) to liquid steels brought about formation of cerium oxy-sulfide inclusions prior to steel solidification. The inclusions have acted as active heterogeneous nucleation sites for grain nucleation during solidification processes and grain structure in final as-cast microstructure was remarkably refined. The performed REM addition produced positive effects on grain structure of the cast steel samples.

Název v anglickém jazyce

Influence of Non-ferrous Metals and Rare-Earth Elements on Structural Characteristics of Cr-Mo Steels

Popis výsledku anglicky

Theoretical and experimental study on influence of addition of selected non-ferrous metals and mischmetal on microstructural characteristics in special Cr-Mo steels were performed. A number of binary iron - admixture systems were theoretically studied and equilibrium distribution coefficients were recently computed. Cast samples of Cr-Mo steel with Ce addition were prepared using a plasma furnace and an induction furnace. Microstructure investigations of the cast steel samples revealed that the additionof rare-earth metals (REM) to liquid steels brought about formation of cerium oxy-sulfide inclusions prior to steel solidification. The inclusions have acted as active heterogeneous nucleation sites for grain nucleation during solidification processes and grain structure in final as-cast microstructure was remarkably refined. The performed REM addition produced positive effects on grain structure of the cast steel samples.

Druh

D - Stať ve sborníku

CEP obor

JG - Hutnictví, kovové materiály

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2014

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

25th National Conference on Heat Treatment : [proceedings of abstracts] : [25-27 November 2014, Jihlava, Czech Republic]

ISBN

978-80-904462-7-4

ISSN

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e-ISSN

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Počet stran výsledku

3

Strana od-do

250-258

Název nakladatele

Asociace pro tepelné zpracování kovů - ECOSOND, s.r.o.

Místo vydání

Praha

Místo konání akce

Jihlava

Datum konání akce

25. 11. 2014

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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