Qin, J.; Li, X.; Wang, D.; Zhou, C.; Hu, T.; Wang, J.; Yang, Y.; Hu, Y. Microstructure and Texture Evolution in Cold-Rolled and Annealed Oxygen-Free Copper Sheets. Materials2024, 17, 2202.
Qin, J.; Li, X.; Wang, D.; Zhou, C.; Hu, T.; Wang, J.; Yang, Y.; Hu, Y. Microstructure and Texture Evolution in Cold-Rolled and Annealed Oxygen-Free Copper Sheets. Materials 2024, 17, 2202.
Qin, J.; Li, X.; Wang, D.; Zhou, C.; Hu, T.; Wang, J.; Yang, Y.; Hu, Y. Microstructure and Texture Evolution in Cold-Rolled and Annealed Oxygen-Free Copper Sheets. Materials2024, 17, 2202.
Qin, J.; Li, X.; Wang, D.; Zhou, C.; Hu, T.; Wang, J.; Yang, Y.; Hu, Y. Microstructure and Texture Evolution in Cold-Rolled and Annealed Oxygen-Free Copper Sheets. Materials 2024, 17, 2202.
Abstract
The commercial oxygen-free copper sheets were cold-rolled with reduction rates ranging from 20% to 87% reduction rate and annealed at 400, 500 and 600 °C. The microstructure and texture evolution during cold-rolling and annealing processes were studied using optical microscopy (OM), the scanning electron microscopy (SEM) and the electron back-scattered diffraction (EBSD). The results show that the deformation textures of {123} (S) , {112} (Copper) and {110} (Brass) were continuously enhanced with the increase of cold-rolling reduction. The orientations along the α-oriented fiber converged towards Brass and the orientation density of β fiber obviously increased when the rolling reduction exceeded 60%. The recrystallization texture was significantly affected by the cold-rolling reduction. After 60% cold-rolling reduction, Copper and S textures components gradually decreased and {011} recrystallization texture component formed with the increase of annealing temperature. After 87% cold-rolling reduction, a strong Cube texture formed and other textures were inhibited with the increase of annealing temperature. The strong Brass and S deformation texture was conducive to the formation of a strong Cube annealing texture. The density of annealing twin boundary decreased with the increase of annealing temperature, and more annealing twin boundaries formed in the oxygen-free copper sheets with the increase of cold rolling reduction.
Keywords
microstructure; texture; copper sheet; rolling reduction; annealing twin
Subject
Chemistry and Materials Science, Materials Science and Technology
Copyright:
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