Abstract
This paper reports the experimental and polycrystal plasticity analysis of microstructural changes in coarse-grained Al-Mg alloy plates caused by large deformation. An intermittent tensile test was performed on an Al-Mg alloy plate specimen having large crystal grains with the average diameter of 14 mm. The SEM/EBSD analyses were performed before and during the intermittent tensile test to clarify the changes in the configurations and crystal properties of the grains in the plate specimen. The polycrystal elastoplastic simulations of the tensile test were also made on the Al-Mg alloy specimen having the observed initial crystallographic properties by using an FEM code the present authors have been developing. Changes in the configurations and crystal properties of the grains obtained by experimentally and computationally were compared and discussed. It was revealed that texturization and refinement of the crystal grains experimentally observed in the specimen were reproduced by the present polycrystal elastoplastic simulations.
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