Title: Ductile-brittle behavior at blunted cavities in 3D iron crystals uncovered and covered by copper atoms
Authors: Pelikán, Vladimír
Hora, Petr
Červená, Olga
Spielmannová, Alena
Machová, Anna
Citation: Applied and Computational Mechanics. 2010, vol. 4, no. 2, p. 191-200.
Issue Date: 2010
Publisher: University of West Bohemia
Document type: article
článek
URI: http://www.kme.zcu.cz/acm/index.php/acm/article/view/48/56
http://hdl.handle.net/11025/1410
ISSN: 1802-680X (Print)
2336-1182 (Online)
Keywords: molekulární dynamika;3D železné krystaly;měděné atomy
Keywords in different language: molecular dynamics;3D iron crystal;copper atoms
Abstract: This paper is devoted to studies of the mechanical response of an atomically blunted cavity uncovered and covered by copper atoms by means 3D molecular dynamic (MD) simulations. The cavity is loaded uni-axially in tension mode I. Our question is how the copper atoms influence the ductile-brittle behavior at the crack front of the blunted cavity in comparison with the blunted cavity in pure bcc iron. We show that the dislocation emission is easier in the Fe–Cu system in comparison with pure bcc iron. However, stability of the blunted cavities seems to be weaker in copper region than in pure bcc iron.
Rights: © 2010 University of West Bohemia. All rights reserved.
Appears in Collections:Volume 4, number 2 (2010)
Volume 4, number 2 (2010)

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