2 Dimensional Dislocation Dynamics – A New Technique for the Simulation of Deformation Microtextures | Zendy

Franz Roters | Zendy; Dierk Raabe | Zendy

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2 Dimensional Dislocation Dynamics – A New Technique for the Simulation of Deformation Microtextures

Author(s) -

Franz Roters,

Dierk Raabe

Publication year - 1997

Publication title -

texture stress and microstructure

Language(s) - English

Resource type - Journals

eISSN - 1687-5400

pISSN - 1687-5397

DOI - 10.1155/tsm.28.167

Subject(s) - dislocation , isotropy , annihilation , materials science , dislocation creep , deformation (meteorology) , enhanced data rates for gsm evolution , thermal , dynamics (music) , partial dislocations , mechanics , condensed matter physics , crystallography , physics , composite material , optics , thermodynamics , computer science , chemistry , telecommunications , quantum mechanics , acoustics

A new technique for the simulation of microtexture evolution during cold deformation which is basedon 2 dimensional (2D) dislocation dynamics is presented. In the simulation all involved dislocationsare regarded as infinite straight line detects which are embedded in an otherwise isotropic linear elasticmedium. As the model is 2D only edge dislocations are considered. In the first simulation step the net local stresses are derived and used to calculate the resultingdislocation motion. Dislocation multiplication, annihilation and reactions are taken into account. Thermalactivation is included. In the second step the local misorientations arising from the dislocationdistribution are calculated. This method shows in microscopic detail how misorientations are generated and distributed withingrains during plastic deformation.

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