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<p>This paper presents a&#xa0;novel technology for processing wire made from a&#xa0;microcomposite copper-based alloy. This technology involves deforming the wire in a&#xa0;rotating, equal-channel, angular, stepped matrix, followed by drawing. Deformation of a&#xa0;6.5 mm diameter wire was conducted in three passes at room temperature, reducing the diameter to 5.0 mm. This treatment resulted in a&#xa0;gradient microstructure featuring an ultradispersed surface layer (grain size ~400 nm) and a&#xa0;gradual increase in grain size toward the center of the wire. Microhardness values were measured at 1150 MPa in the surface zone, 770 MPa in the neutral zone, and 685 MPa in the central zone. The presence of a&#xa0;gradient microstructure, characteristic of deformed materials, is confirmed by the symmetric range of microhardness values observed across the entire cross-section of the rod. Numerous experiments using a&#xa0;combination of traditional and modern research methods substantiate the validity of the results.</p>

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Fabrication of gradient structured copper-based microcomposite alloy wire via novel deformation technique

  • 期刊论文

  • 发表日期：

    2025年9月29日

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  • A. V. Volokitin,
  • I. E. Volokitina

摘要

This paper presents a novel technology for processing wire made from a microcomposite copper-based alloy. This technology involves deforming the wire in a rotating, equal-channel, angular, stepped matrix, followed by drawing. Deformation of a 6.5 mm diameter wire was conducted in three passes at room temperature, reducing the diameter to 5.0 mm. This treatment resulted in a gradient microstructure featuring an ultradispersed surface layer (grain size ~400 nm) and a gradual increase in grain size toward the center of the wire. Microhardness values were measured at 1150 MPa in the surface zone, 770 MPa in the neutral zone, and 685 MPa in the central zone. The presence of a gradient microstructure, characteristic of deformed materials, is confirmed by the symmetric range of microhardness values observed across the entire cross-section of the rod. Numerous experiments using a combination of traditional and modern research methods substantiate the validity of the results.