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Ductile–brittle behavior at blunted cavities in 3D iron crystals uncovered and covered by copper atoms
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SYSNO ASEP 0356691 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Ostatní články Title Ductile–brittle behavior at blunted cavities in 3D iron crystals uncovered and covered by copper atoms Author(s) Pelikán, Vladimír (UT-L) RID
Hora, Petr (UT-L) RID, ORCID
Červená, Olga (UT-L)
Spielmannová, Alena (UT-L) RID, ORCID
Machová, Anna (UT-L) RID, ORCIDNumber of authors 5 Source Title Applied and Computational Mechanics - ISSN 1802-680X
Roč. 4, č. 2 (2010), s. 191-200Number of pages 10 s. Language eng - English Country CZ - Czech Republic Keywords molecular dynamics ; bcc iron crystal ; blunted cavity ; copper cover ; ductile–brittle behavior Subject RIV JG - Metallurgy R&D Projects GA101/07/0789 GA ČR - Czech Science Foundation (CSF) KJB200760802 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z20760514 - UT-L (2005-2011) Annotation 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 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. Workplace Institute of Thermomechanics Contact Marie Kajprová, kajprova@it.cas.cz, Tel.: 266 053 154 ; Jana Lahovská, jaja@it.cas.cz, Tel.: 266 053 823 Year of Publishing 2011
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