Microstructure and texture evolution of Cu–Nb composite wires

Deng, Liping; Yang, Xiaofang; Han, Ke; Lu, Yafeng; Liang, Ming; Qing, Liu

doi:10.1016/j.matchar.2013.04.013

Cited by 38 publications

(23 citation statements)

References 40 publications

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“…However, the size and distribution of the Cr phase is no obvious change. similar to those reported in previous research [9] [10] [15]. Figure 2 shows the schematic diagram of formation of fibres in deformation-processed Cu-based in situ composites along the longitudinal section.…”

Section: Longitudinal Sectional Microstructuresupporting

confidence: 84%

Evolution of Microstructure in a Cu-Cr in situ Composite Produced by Thermo-Mechanical Processing

Liu¹,

Lu²,

Fu³

et al. 2017

MSCE

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This paper studied the microstructure evolution of a deformation-processed Cu-7Cr in situ composite prepared by thermo-mechanical processing. The longitudinal and transverse sectional microstructures were analyzed using an optical microscope and a scanning electronic microscope. In the longitudinal section, the initially randomly distributed Cr dendrites in the as-cast Cu-7Cr alloy were transformed into the fibres aligned parallel to the drawing axis; the Cr dendrites experienced breaking, flattening and rotating, lapping and merging, and homogenizing and refinement during thermo-mechanical processing. In the transverse section, the initially randomly distributed Cr dendrites in the as-cast Cu-7Cr alloy were changed into the curvy ribbon like fibres; the Cr dendrites underwent breaking, flattening and rotating, folding and twisting, and irregularizing and refinement during thermo-mechanical processing.

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Section: Longitudinal Sectional Microstructuresupporting

confidence: 84%

Evolution of Microstructure in a Cu-Cr in situ Composite Produced by Thermo-Mechanical Processing

Liu¹,

Lu²,

Fu³

et al. 2017

MSCE

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“…1 а, б). Она отмечалась в многочисленных публикациях, и приписывается особенностям систем скольжения в ОЦК Nb и влиянию ГЦК медной матрицы [3,6,8,19,20].…”

Section: результаты эксперимента и их обсуждениеunclassified

SPECIAL CHARACTERISTICS OF THE MICROSTRUCTURE OF HIGH-STRENGTH MULTIFILAMENTARY Cu-18Nb COMPOSITES

Valova-Zaharevskaya¹,

Deryagina²,

Попова³

et al. 2018

DREAM

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The paper presents refined data on the macroscopic and microscopic stresses according to X-ray diffraction analysis in multifilamentary Cu-18Nb composites fabricated by the melt-anddeform (in-situ) route, with a true strain e of 10.2 and 12.5. Under large plastic deformation by cold drawing, Nb dendrites in the Cu matrix acquire the shape of ribbons with the thickness d ecreasing to below 100 nm with increasing strain. The sharp fiber texture <110>Nb  <111>Cu  DA (deformation axis) develops in the composites, and its degree grows with increasing strain. The Nb crystal lattice is distorted due to the partially coherent character of the Cu/Nb interfaces, and these distortions also increase with strain. They are manifested in {110} Nb interplanar spacings extended in the longitudinal sections of the composites and compressed in the cross sections. In the Cu matrix lattice distortions are also observed, though they are much less pronounced, this being attributable to the dynamic recrystallization of copper and the weakening of its texture, even when in the composite.

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“…During this process, a multi-scale Cu matrix with grain sizes ranging from a few microns to a few nanometers is formed [15]. Metals experiencing axisymmetric deformation after ADB will develop a fiber texture and only one direction is needed to fully represent the preferred orientation [16,17]. The large number of embedded Nb fibers affects the deformation and texture development of the Cu matrix [18].…”

Section: Introductionmentioning

confidence: 99%

“…Nevertheless, the texture obtained by TEM did not support this result statistically. Recently, an EBSD investigation of as-deformed Cu-Nb wires [15,16] at different scales demonstrated different proportions of <111> and <100> texture [15] within regions of the Cu matrix. However, these studies mainly focused on the micron-scale texture of the Cu matrix rather than the nanoscale.…”

Section: Introductionmentioning

confidence: 99%

Texture Evolution and Nanohardness in Cu-Nb Composite Wires

et al. 2021

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Multifilamentary microcomposite copper-niobium (Cu-Nb) wires were fabricated by a series of accumulative drawing and bonding steps (ADB). The texture of the Cu matrix in these wires was studied using electron backscattered diffraction (EBSD) and transmission electron microscopy (TEM). Dynamic recrystallization during cold drawing caused a weakening of the <111> texture in the micron-scale Cu matrix at high values of true strain. A sharp <111> texture was observed in the nano-scale Cu matrix due to the suppression of dynamic recrystallization. The grain size was reduced by the higher level of dynamic recrystallization at high strains. The relation between the nanoindentation behavior of the different Cu matrix and the grain sizes, Cu-Nb interface, and texture was established.

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Microstructure and texture evolution of Cu–Nb composite wires

Cited by 38 publications

References 40 publications

Evolution of Microstructure in a Cu-Cr in situ Composite Produced by Thermo-Mechanical Processing

Evolution of Microstructure in a Cu-Cr in situ Composite Produced by Thermo-Mechanical Processing

SPECIAL CHARACTERISTICS OF THE MICROSTRUCTURE OF HIGH-STRENGTH MULTIFILAMENTARY Cu-18Nb COMPOSITES

Texture Evolution and Nanohardness in Cu-Nb Composite Wires

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