Mechanism of Grain Refinement Induced by Severe Plastic Deformation

Result code in 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>

Result on the web

<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>

Result language

angličtina

Original language name

Mechanism of Grain Refinement Induced by Severe Plastic Deformation

Original language description

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.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BM - Solid-state physics and magnetism

OECD FORD branch

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Project

<a href="/en/project/GAP201%2F10%2F0357" target="_blank" >GAP201/10/0357: Modern mathematical and computational models for inelastic processes in solids</a><br>

Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2011

Confidentiality

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

Name of the periodical

Materials Science Forum

ISSN

0255-5476

e-ISSN

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Volume of the periodical

667-669

Issue of the periodical within the volume

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Country of publishing house

CH - SWITZERLAND

Number of pages

6

Pages from-to

617-622

UT code for WoS article

000299234300103

EID of the result in the Scopus database

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