Study on Texture Evolution and Deformation Mechanism of the Cu-Ni-Si Alloy during Cold-rolling Treatment

He, Wei; Chen, Yinli; Su, Lan; Tang, Di; Xu, Zhijun

doi:10.1016/j.proeng.2017.10.1068

Cited by 10 publications

(4 citation statements)

References 15 publications

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“…The rolling reduction rate was also a crucial process parameter for controlling the deformation microstructure, with some deformation textures being enhanced with increasing degrees of deformation. In the case of the Cu-Ni-Si alloy, Cu-Cr-Zr alloy and α brass, as cold-rolling reduction rates increased, the Copper texture gradually transitioned to Brass texture [13]. Different rolling methods also led to changes in deformation textures, and asymmetric rolling caused the grain orientation to rotate around the transverse direction of the sample [14].…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Texture Evolution in Cold-Rolled and Annealed Oxygen-Free Copper Sheets

Qin,

Li,

Wang

et al. 2024

Materials

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Commercial oxygen-free copper sheets were cold-rolled with reduction rates ranging from 20% to 87% and annealed at 400, 500 and 600 °C. The microstructure and texture evolution during the cold-rolling and annealing processes were studied using optical microscopy (OM), scanning electron microscopy (SEM) and electron back-scattered diffraction (EBSD). The results show that the deformation textures of {123}<634> (S), {112}<111> (Copper) and {110}<112> (Brass) were continuously enhanced with the increase in 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 texture components gradually decreased, and the {011}<511> recrystallization texture component formed with the increase in annealing temperature. After 87% cold-rolling reduction, a strong Cube texture formed, and other textures were inhibited with the increase in annealing temperature. The strong Brass and S deformation texture was conducive to the formation of a strong Cube annealing texture. The density of the annealing twin boundary decreased with the increase in annealing temperature, and more annealing twin boundaries formed in the oxygen-free copper sheets with the increase in cold-rolling reduction.

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Section: Introductionmentioning

confidence: 99%

Microstructure and Texture Evolution in Cold-Rolled and Annealed Oxygen-Free Copper Sheets

Qin,

Li,

Wang

et al. 2024

Materials

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show abstract

“…The rolling reduction rate was also a crucial process parameter for controlling the deformation microstructure, with some deformation textures being enhanced with increasing degrees of deformation. In the case of Cu-Ni-Si alloy, Cu-Cr-Zr alloy, and α brass, as cold-rolling reduction rates increased, Copper texture gradually transitioned to Brass texture [13]. Different rolling methods also led to changes in deformation textures, and asymmetric rolling caused the grain orientation to rotate around the transverse direction of the sample [14].…”

Section: Introductionmentioning

confidence: 99%

Microstructure and Texture Evolution in Cold‐Rolled and Annealed Oxygen‐Free Copper Sheets

Qin,

Li,

Wang

et al. 2024

Preprint

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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.

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“…This residual stress has a great impact on the properties and service life of the material. Eliminating or controlling residual stress in workpieces is an important scientific and engineering problem [7][8][9]. In randomly oriented equiaxed grain structures, the probability and number of deformation twins and shear bands is different in each grain during deformation, resulting in serious uneven deformation between grains [10,11].…”

Section: Introductionmentioning

confidence: 99%

Effect and Mechanism of Solidified Microstructure on Deformation Behavior, Mechanical Properties, and Residual Stress of Cu-Ni-Si Alloy

et al. 2022

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Cu-Ni-Si alloy is the key raw material for the lead frame of large integrated circuits. The disordered grain orientation of alloy billet, high hardening rate, residual stress, and poor surface quality of cold working strips seriously affect its processability. In order to improve the cold-working properties of Cu-Ni-Si alloy, two kinds of C70250 copper alloy strips were produced through hot mold continuous casting (HMCC) and cold mold continuous casting (CMCC) technology. The effects of solidified microstructure on the cold-working deformation behavior, mechanical properties, and residual stress of the alloy were studied. The results show that C70250 copper alloys with columnar grain and equiaxed grain were prepared through HMCC and CMCC. After a 98% reduction in cold rolling, columnar grain strip surface quality was very good, and the elongation was still as high as 3.2%, which is 2.9 times that of equiaxed grain alloy. The residual stress of equiaxed grain strips reached 363 MPa, which is 2.7 times that of columnar grain strips. During the cold rolling process, equiaxed grain strips are prone to cause intersecting plane dislocations, stacking faults, shear bands, and grain breakage during large deformation cold rolling. The columnar grain strip causes parallel plane dislocations, stacking faults, and shearbands. Furthermore, the deformation structure was found to be uniform, and, ultimately, the alloy formed a fibrous structure. Therefore, the elongation and latter distortion of columnar grain strips improved after being put through large deformation cold rolling, which greatly reduced residual stress.

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Study on Texture Evolution and Deformation Mechanism of the Cu-Ni-Si Alloy during Cold-rolling Treatment

Cited by 10 publications

References 15 publications

Microstructure and Texture Evolution in Cold-Rolled and Annealed Oxygen-Free Copper Sheets

Microstructure and Texture Evolution in Cold-Rolled and Annealed Oxygen-Free Copper Sheets

Microstructure and Texture Evolution in Cold‐Rolled and Annealed Oxygen‐Free Copper Sheets

Effect and Mechanism of Solidified Microstructure on Deformation Behavior, Mechanical Properties, and Residual Stress of Cu-Ni-Si Alloy

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