Struktura a vlastnosti materiálů po deformaci metodou ECAP

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

Structure and Properties of Materials after Pressing by the ECAP

Popis výsledku v původním jazyce

The article presents results of investigation of structure and properties of low-carbon steel grade P2-04BCh after application of Equal Channel Angular Pressing (ECAP) at the temperature of approx. 290°C. The ECAP method leads to significant improvementof strength of investigated material. Investigation of structure was made by combination of TEM and FEG SEM together with EBSD. It was proven that the ECAP method enables obtaining of ultra fine-grained ferritic structure formed by re-crystallised grainswith very low dislocation density and a small fraction of spheroidised carbides, which occurred usually at the ferritic grain boundaries. It was established with use of the EBSD technique that after 8 passes through the ECAP die the sub-grains with misorientation angles smaller than 10° formed less than 20% of the final structure. Average size of ferrite grains with high-angle boundaries after 8 passes was approx. 0.32mm.

Název v anglickém jazyce

Structure and Properties of Materials after Pressing by the ECAP

Popis výsledku anglicky

The article presents results of investigation of structure and properties of low-carbon steel grade P2-04BCh after application of Equal Channel Angular Pressing (ECAP) at the temperature of approx. 290°C. The ECAP method leads to significant improvementof strength of investigated material. Investigation of structure was made by combination of TEM and FEG SEM together with EBSD. It was proven that the ECAP method enables obtaining of ultra fine-grained ferritic structure formed by re-crystallised grainswith very low dislocation density and a small fraction of spheroidised carbides, which occurred usually at the ferritic grain boundaries. It was established with use of the EBSD technique that after 8 passes through the ECAP die the sub-grains with misorientation angles smaller than 10° formed less than 20% of the final structure. Average size of ferrite grains with high-angle boundaries after 8 passes was approx. 0.32mm.

Druh

D - Stať ve sborníku

CEP obor

JG - Hutnictví, kovové materiály

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2008

Kód důvěrnosti údajů

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

Název statě ve sborníku

ECF 17 th European Conference on Fracture, Multilevel Approach to Fracture of Materials, Components and Structures

ISBN

978-80-214-3692-3

ISSN

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e-ISSN

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Počet stran výsledku

8

Strana od-do

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Název nakladatele

Pokluda, Lukáš , Šandera, Dlouhý

Místo vydání

VUTIUM, Brno

Místo konání akce

Brno

Datum konání akce

1. 1. 2008

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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