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Atomistic based continuum investigation of plastic deformation in nanocrystalline copper
Ist Teil von
International journal of plasticity, 2006-01, Vol.22 (4), p.754-774
Ort / Verlag
Oxford: Elsevier Ltd
Erscheinungsjahr
2006
Link zum Volltext
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
A continuum model of nanocrystalline copper was developed based on results from independent atomistic calculations on 11 bicrystals containing high angle grain boundaries. The relationship between grain boundary structure and its mechanical response was investigated. Based on the atomistic calculations; a constitutive law for grain boundary interfaces was implemented within a finite element calculation that consisted of a microstructure loaded in compression. The yield strength as a function of grain size was compared to experimental data and molecular dynamics results. Calculations were performed to demonstrate the relationship between intragranular plasticity and grain boundary sliding.