Supercube grains leading to a strong cube texture and a broad grain size distribution after recrystallization

• Published in: Philosophical magazine (Abingdon, England) Vol. 95; no. 22; pp. 2427 - 2449
• Main Authors: Lin, F.X., Zhang, Y.B., Pantleon, W., Juul Jensen, D.
• Format: Journal Article
• Language: English
• Published: Taylor & Francis 03.08.2015
• Subjects: Backscattering; Characterization techniques; Cold rolling; copper; Crystallization; Cube texture; Deformed microstructure; Electron back scatter diffraction; electron backscatter diffraction (EBSD); Electron diffraction; Enzyme kinetics; Evolution; Geometry; Grain size and shape; Grain size distribution; Grains; Growth kinetics; Individual grains; kinetics; Maskinteknik; Materials Engineering; Materialteknik; Mechanical Engineering; Metal cladding; Microstructure; Recrystallization; Recrystallization (metallurgy); Size distribution; Synchrotron x rays; texture; Textures; three-dimensional X-ray diffraction (3DXRD); X ray diffraction; X-rays
• ISSN: 1478-6435; 1478-6443; 1478-6443
• DOI: 10.1080/14786435.2015.1063787

This work revisits the classical subject of recrystallization of cold-rolled copper. Two characterization techniques are combined: three-dimensional X-ray diffraction using synchrotron X-rays, which is used to measure the growth kinetics of individual grains in situ, and electron backscatter diffraction, which is used for statistical analysis of the microstructural evolution. As the most striking result, the strong cube texture after recrystallization is found to be related to a few super large cube grains, which were named supercube grains. These few supercube grains become large due to higher growth rates. However, most other cube grains do not grow preferentially. Because of the few supercube grains, the grain size distribution after recrystallization is broad. Reasons for the higher growth rates of supercube grains are discussed, and are related to the local deformed microstructure.