Characteristics of Commercially Pure Aluminum 1020 after Simple Compression Process

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Author(s) S. T. Adedokun | T. A. Fashanu | S. Oyebanji
Pages 1648-1656
Volume 2
Issue 10
Date October, 2012
Keywords Aluminum 1020, Simple compression, Single grain, EBSD, Finite element method

Abstract

Deformation of a miniaturized aluminum specimens were carried out experimentally using a simple compression test. This test was used to verify the simulation technique based on the crystal plasticity model with which grain-by-grain deformation behavior can be anticipated. 99.99% polycrystalline aluminum cubes with dimensions of 3 mm × 3 mm × 3 mm is tested. Application of consecutive heat treatments produced an average grain size in the aluminum specimens of 1 – 3 mm. The specimens used in this study were classified into two types: the miniaturized specimens (supposedly with a single grain, type1) and the specimens composed of several grains (type2). Electron backscattered diffraction (EBSD) system was used to quantify the grain orientations of the heavily deformed specimens used. The resultant deformations of the type1 specimens are then compared with the calculations based on the crystal plasticity. For the type2 specimens, finite element method (FEM) using the crystal plasticity material model is adopted to predict the complicated grain-by-grain deformations. The similarity between the experimental observations and the FEM predictions is compared in a qualitative manner.

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