Micro and Macro Analysis of Anisotropy of an AA3104 Aluminum Alloy

International Deep Drawing Research Group 37th Annual Conference

Anderson, D.^1 ; Raeisinia, B.^1,2

Novelis, Inc., 1950 Vaughn Rd., Kennesaw GA

30144, United States^1

OxMet Technologies Inc., Acworth

GA

30102, United States^2

关键词: AA3104 aluminum alloys;    Analysis techniques;    Crystal plasticity;    Crystallographic textures;    Digital image correlations;    Portevin-Le Chatelier effects;    Texture measurement;    Viscoplastic self-consistent model;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/418/1/012088/pdf
DOI  :  10.1088/1757-899X/418/1/012088

来源: IOP

【 摘 要 】

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.