Influence of Dendritic Morphology on the Strain Field of Dendritic Solidification Structures

MARIO ROBERTO ROSENBERGER; SCHVEZOV, CARLOS E.; ALEJANDRO MORENO

San Diego

Conferencia; Symposium: Pan American Materials Congress: Advanced Biomaterials, TMS 2017 ? 146º ANNUAL MEETING & EXHIBITION; 2017

The behavior behaviorbehavior behavior behaviorat thethe microstructural microstructuralmicrostructural microstructural microstructural microstructural microstructural level level levelin metallic metallic metallicmaterials materials materials is studied studied studied to understand understand understand understand understandthe effects effects effectseffectsof the morphological morphological morphological morphological morphological morphologicalmorphologicalparameters parameters parameters parameters parameterson the stress stress stress and deformation deformation deformation deformation fields fields fields.Using Usingatwo -dimensional dimensional dimensional dimensionaldimensional dimensionalmodel model to analize analize analize agrain grain grainwith dendritic dendritic dendritic dendritic geometry geometry geometry in interaction interactioninteraction interaction interaction interactionwith amatrix matrix matrix,under under tensile tensile tensile tests of the matrix matrix simulation simulation simulationwere perdormed perdormedperdormed perdormed perdormed based on thethe curvature curvature curvature of the dendritic dendritic dendritic dendritic tip ,the length length length of the dendritic dendritic dendritic dendriticdendriticbranches and the size size of grain grain grain.It is assumed assumed assumed amicrostructure microstructuremicrostructure microstructure microstructure microstructure microstructurecomposed composed composed composedby two phases :amatrix matrix that thatconstains constains constainsconstains constains adendritic, dendritic, dendritic, dendritic, dendritic,whose whosebehavior behaviorbehavior behavior behavioris modeled modeled modeled in elastoplastic elastoplastic elastoplastic elastoplastic elastoplastic elastoplastic regime regime regime assuming assuming assuming for both both phases that thatthey theyhave equal equalequal stiffnes stiffnes stiffnes stiffnesbut different differentdifferent differentplastic plastic plastic properties properties properties properties properties.