Ultrafine grain structure of medium carbon steel prepared by HPT severe plastic deformation method

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

Ultrafine grain structure of medium carbon steel prepared by HPT severe plastic deformation method

Popis výsledku v původním jazyce

The aim of this work is to evaluate the deformation process parameters of high pressure torsion and formation of ultrafine grained structurein medium carbon steel. Using the high pressure torsion deformation method at increased temperature the study of ultrafine grain structure formation in medium carbon steel was carried out with respect to introduced shear strain. The effect of different shear strain, varying across the deformed disc in time of torsion process, on microstructure evolution was investigated by TEM of thin foils. Microstructure analysis confirmed positional deformation heterogeneity in ultrafine grain structure formation across the disc due to the strain variation. Ultrafine grain structure was already formed at disc periphery performing the first turn. In central part of the disc, inexpressive deformation of ferrite and pearlite sructure was observed. Variatoin in mechanical properties can be related to the stress level and structure heterogeneity across the disc.

Název v anglickém jazyce

Ultrafine grain structure of medium carbon steel prepared by HPT severe plastic deformation method

Popis výsledku anglicky

The aim of this work is to evaluate the deformation process parameters of high pressure torsion and formation of ultrafine grained structurein medium carbon steel. Using the high pressure torsion deformation method at increased temperature the study of ultrafine grain structure formation in medium carbon steel was carried out with respect to introduced shear strain. The effect of different shear strain, varying across the deformed disc in time of torsion process, on microstructure evolution was investigated by TEM of thin foils. Microstructure analysis confirmed positional deformation heterogeneity in ultrafine grain structure formation across the disc due to the strain variation. Ultrafine grain structure was already formed at disc periphery performing the first turn. In central part of the disc, inexpressive deformation of ferrite and pearlite sructure was observed. Variatoin in mechanical properties can be related to the stress level and structure heterogeneity across the disc.

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

2009

Kód důvěrnosti údajů

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

Název statě ve sborníku

Conference proceedings NANOCON 2009

ISBN

978-80-87294-12-3

ISSN

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e-ISSN

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Počet stran výsledku

5

Strana od-do

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Název nakladatele

TANGER, spol. s.r.o.

Místo vydání

Ostrava, Czech Republic

Místo konání akce

Rožňov pod Radhoštěm, Czech Republic

Datum konání akce

1. 1. 2009

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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