Defects and particles in laboratory hot rolled steel of C-Mn-Cr-Nb type

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

Defects and particles in laboratory hot rolled steel of C-Mn-Cr-Nb type

Popis výsledku v původním jazyce

Susceptibility to cracking of the as-cast C-Mn-Cr-Nb steel was studied by laboratory rolling. The variable parameters were the heating temperature as well as the rolling temperature. Final microstructure of the free-cooled samples was constituted by bainite, pearlite and ferrite with different morphology and various contribution. Deformation temperature below 1000 °C yielded in the incomplete recrystallization of austenite. Surface cracks originated preferentially on the austenite grains? boundaries. Size of the present particles (inclusions and precipitates) varied from 10-8 m to 10-5 m. SEM and EDS analysis revealed that the inclusions ware mostly of the MnS type. TEM analysis confirmed that the grain boundaries were not enriched by any particles. Inaddition to the Fe3C particles, the discoid niobium carbide particles with approximately 40 nm diameter and 10 nm thickness were detected.

Název v anglickém jazyce

Defects and particles in laboratory hot rolled steel of C-Mn-Cr-Nb type

Popis výsledku anglicky

Susceptibility to cracking of the as-cast C-Mn-Cr-Nb steel was studied by laboratory rolling. The variable parameters were the heating temperature as well as the rolling temperature. Final microstructure of the free-cooled samples was constituted by bainite, pearlite and ferrite with different morphology and various contribution. Deformation temperature below 1000 °C yielded in the incomplete recrystallization of austenite. Surface cracks originated preferentially on the austenite grains? boundaries. Size of the present particles (inclusions and precipitates) varied from 10-8 m to 10-5 m. SEM and EDS analysis revealed that the inclusions ware mostly of the MnS type. TEM analysis confirmed that the grain boundaries were not enriched by any particles. Inaddition to the Fe3C particles, the discoid niobium carbide particles with approximately 40 nm diameter and 10 nm thickness were detected.

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

Metallography XV : selected, peer reviewed papers from the International Symposium on Metallography (Metallography 2013), April 24-26, 2013, Stará Lesná, Slovak Republic

ISBN

978-3-03835-072-9

ISSN

0255-5476

e-ISSN

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Počet stran výsledku

6

Strana od-do

221-226

Název nakladatele

Trans Tech Publications

Místo vydání

Durnten-Zurich

Místo konání akce

Stará Lesná

Datum konání akce

24. 4. 2014

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000338978600038