Asymmetric cross rolling (ACR): A novel technique for enhancement of Goss/Brass texture ratio in Al-Cu-Mg alloy

Journal Article · Wed Aug 15 04:00:00 EDT 2018 · Materials Characterization

DOI:https://doi.org/10.1016/J.MATCHAR.2018.06.004· OSTI ID:22805098

Goli, Fatemeh; Jamaati, Roohollah ^[1]

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1. Department of Materials Engineering, Babol Noshirvani University of Technology, Shariati Ave., Babol 47148–71167 (Iran, Islamic Republic of)

Highlights: • The main components of the ACR were Goss, Rotated Goss, Goss-Brass, and α-fiber. • The ACR process was obviously impactful to enhance the Goss/Brass texture ratio. • The Goss/Brass texture ratio increased to 1.51 after 30% ACR process. • During 30% rolling, the DRX occurred and the intensity of Goss and Cube increased. - Abstract: The present work focused on the effect of asymmetric cross rolling (ACR) process as a novel technique on microstructure and texture evolution of Al-Cu-Mg alloys. The microstructural observation and bulk texture from RD–TD plane of the initial and deformed samples were characterized by optical microscopy (OM) and X-ray diffraction (XRD). It was found that the deformed Al-Cu-Mg alloy consisted of strong Goss, Rotated Goss, Goss-Brass, and α-fiber textures. Usually, straight rolling leads to a significant strengthening of the Brass component with increasing strain in the Al-Cu-Mg alloy, but for asymmetrically cross rolled samples, the Goss orientation was stable after 40% deformation. Results showed that the ACR process was effective to intensify (up to 1.51 after 30% thickness reduction) the low Goss/Brass texture ratio often existing in the rolled Al-Cu-Mg alloy. During 30% ACR, the dynamic recrystallization (DRX) occurred, which led to increasing the intensity of Goss and Cube components and the fraction of extra high angle grain boundaries (EHAGBs).

• OSTI ID: 22805098
• Journal Information: Materials Characterization, Journal Name: Materials Characterization Vol. 142; ISSN 1044-5803; ISSN MACHEX
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM COMPOUNDS
ASYMMETRY
BRASS
COPPER COMPOUNDS
CRYSTALLOGRAPHY
DEFORMATION
FIBERS
GRAIN BOUNDARIES
MAGNESIUM COMPOUNDS
OPTICAL MICROSCOPY
RECRYSTALLIZATION
ROLLING
TERNARY ALLOY SYSTEMS
TEXTURE
THICKNESS
X-RAY DIFFRACTION