Počet záznamů: 1

Ductile–brittle behavior at blunted cavities in 3D iron crystals uncovered and covered by copper atoms

  1. 1.
    0356691 - UT-L 2011 RIV CZ eng J - Článek v odborném periodiku
    Pelikán, Vladimír - Hora, Petr - Červená, Olga - Spielmannová, Alena - Machová, Anna
    Ductile–brittle behavior at blunted cavities in 3D iron crystals uncovered and covered by copper atoms.
    Applied and Computational Mechanics. Roč. 4, č. 2 (2010), s. 191-200 ISSN 1802-680X
    Grant CEP: GA ČR(CZ) GA101/07/0789; GA AV ČR KJB200760802
    Výzkumný záměr: CEZ:AV0Z20760514
    Klíčová slova: molecular dynamics * bcc iron crystal * blunted cavity * copper cover * ductile–brittle behavior
    Kód oboru RIV: JG - Hutnictví, kovové materiály
    http://www.kme.zcu.cz/acm/index.php/acm/article/view/48

    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.
    Trvalý link: http://hdl.handle.net/11104/0195144