Mechanism of Grain Refinement Induced by Severe Plastic Deformation

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F11%3A00174181" target="_blank" >RIV/68407700:21110/11:00174181 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.4028/www.scientific.net/MSF.667-669.617" target="_blank" >http://dx.doi.org/10.4028/www.scientific.net/MSF.667-669.617</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.4028/www.scientific.net/MSF.667-669.617" target="_blank" >10.4028/www.scientific.net/MSF.667-669.617</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Mechanism of Grain Refinement Induced by Severe Plastic Deformation

Popis výsledku v původním jazyce

The grain refinement observed in metals exposed to severe plastic deformation (SPD) is interpreted as an energy minimization process. For a crystalline solid it is less energetically costly to be fragmented in small regions (subgrains) deformed by a reduced number of slip systems and fitted together by local reorientations than to be deformed by homogeneous multislip. The energy minimization enhanced by hardening tends to reduce the size of the subgrains. On the other hand, the refinement increases thearea of the boundaries between the subgrains, hence, it increases interface energy. The effective rotation of the active slip systems, which is a basic characteristic of SPD processing techniques, enhances the refinement process. It is proposed that theeffective rotation causes a continuous reconstruction of the substructure pattern. The hindered destruction of the previous pattern leads to an increased hardening thus reducing the size of the subgrains.

Název v anglickém jazyce

Mechanism of Grain Refinement Induced by Severe Plastic Deformation

Popis výsledku anglicky

The grain refinement observed in metals exposed to severe plastic deformation (SPD) is interpreted as an energy minimization process. For a crystalline solid it is less energetically costly to be fragmented in small regions (subgrains) deformed by a reduced number of slip systems and fitted together by local reorientations than to be deformed by homogeneous multislip. The energy minimization enhanced by hardening tends to reduce the size of the subgrains. On the other hand, the refinement increases thearea of the boundaries between the subgrains, hence, it increases interface energy. The effective rotation of the active slip systems, which is a basic characteristic of SPD processing techniques, enhances the refinement process. It is proposed that theeffective rotation causes a continuous reconstruction of the substructure pattern. The hindered destruction of the previous pattern leads to an increased hardening thus reducing the size of the subgrains.

Druh

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

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

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Projekt

<a href="/cs/project/GAP201%2F10%2F0357" target="_blank" >GAP201/10/0357: Moderní matematické a počítačové modely pro ne-elastické procesy v pevných látkách</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2011

Kód důvěrnosti údajů

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

Název periodika

Materials Science Forum

ISSN

0255-5476

e-ISSN

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Svazek periodika

667-669

Číslo periodika v rámci svazku

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Stát vydavatele periodika

CH - Švýcarská konfederace

Počet stran výsledku

6

Strana od-do

617-622

Kód UT WoS článku

000299234300103

EID výsledku v databázi Scopus

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