Abstract
Anisotropy plays an important role when forming aluminum alloys. Measurement of anisotropy using traditional extensometers can be challenging when working with AA3104 alloys due to the presence of Piobert-Lüder’s banding and the Portevin-Le Chatelier effect. Piobert-Lüder’s bands creates large variations in r-value necessitating alternative analysis techniques. In the present work r-values obtained from digital image correlation are compared to viscoplastic self-consistent (VPSC) model predictions. The VPSC predictions are computed based on experimental texture measurements. Good correlation was obtained between the digital image correlation measured and crystal plasticity predicted r-values. The r-value results are assessed based on contribution of different crystallographic texture components.
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