Effect of preliminary treatment on grain refinement of medium carbon steel using ECAP at increased temperature

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F26316919%3A_____%2F10%3A%230000224" target="_blank" >RIV/26316919:_____/10:#0000224 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Effect of preliminary treatment on grain refinement of medium carbon steel using ECAP at increased temperature

Popis výsledku v původním jazyce

The work deals with grain refinement of medium carbon steel with different initial microstructure modified either by thermal or thermomechanical treatment (TM) prior severe plastic deformation. In case of TM treated steel, structure refinement was conducted in two steps. Preliminary structure refinement has been achieved due to multistep open die forging process which provided total strain of 3. Uniform recrystallized structure with 2-5 ?m grain size and with nest-like pearlite colonies was obtained. Further grain refinement of samples with different initial structure was accomplished during ECAP at 400°C. The microstructure development was analyzed in dependence of effective strain introduced. The process resulted in extensive deformation of ferrite grains where mixture of subgrains and ultrafine grain was found. The tensile behavior was characterized by strength increase for both structural steel states.

Název v anglickém jazyce

Effect of preliminary treatment on grain refinement of medium carbon steel using ECAP at increased temperature

Popis výsledku anglicky

The work deals with grain refinement of medium carbon steel with different initial microstructure modified either by thermal or thermomechanical treatment (TM) prior severe plastic deformation. In case of TM treated steel, structure refinement was conducted in two steps. Preliminary structure refinement has been achieved due to multistep open die forging process which provided total strain of 3. Uniform recrystallized structure with 2-5 ?m grain size and with nest-like pearlite colonies was obtained. Further grain refinement of samples with different initial structure was accomplished during ECAP at 400°C. The microstructure development was analyzed in dependence of effective strain introduced. The process resulted in extensive deformation of ferrite grains where mixture of subgrains and ultrafine grain was found. The tensile behavior was characterized by strength increase for both structural steel states.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

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

2010

Kód důvěrnosti údajů

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

Název periodika

Materials Science Forum

ISSN

1662-9752

e-ISSN

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Svazek periodika

638-642

Číslo periodika v rámci svazku

January

Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

6

Strana od-do

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Kód UT WoS článku

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EID výsledku v databázi Scopus

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