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Deformation behavior of Cu-12wt%Al alloy wires with continuous columnar crystals in dieless drawing process

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Abstract

The microstructure and mechanical properties of Cu-12wt%Al alloy wires which are composed of continuous columnar crystals after dieless drawing forming at drawing speed of 1.0–1.4 mm/s and deformation temperature of 600–900°C were analyzed, and deformation behavior of the alloy during dieless drawing forming was experimentally investigated. The results showed that in the above-mentioned conditions, recrystallization phenomenon was not found during dieless drawing forming. When a drawing speed of 1.0 mm/s was used, the grain boundaries were out of straight gradually with increasing deformation temperature from 600°C to 900°C, and tensile strength of the dieless drawn Cu-12wt%Al alloy wires increased while elongations decreased with increasing deformation temperature. At drawing speed of 1.1–1.2 mm/s and deformation temperature of 600°C, the effect of dieless drawing forming process on the microstructure of the alloy was inconspicuous, and when drawing speed was up to 1.3–1.4 mm/s, the grain boundaries of continuous columnar crystals became zigzag while there was little effect of drawing speed of 1.1–1.4 mm/s on the elongation and tensile strength of the alloy wires.

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Authors and Affiliations

  1. Key Laboratory of Advanced Processing Technology of Materials of Ministry of Education, University of Science and Technology Beijing, Beijing, 100083, China

    XueFeng Liu & YuHui Wu

  2. State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing, 100083, China

    XueFeng Liu & JianXin Xie

Authors
  1. XueFeng Liu
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  2. YuHui Wu
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  3. JianXin Xie
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Correspondence to JianXin Xie.

Additional information

Supported by the National Basic Research Program of China (Grant No. 2006CB605200), the National High Technology Research and Development Program of China (Grant No. 2006AA03Z506), the National Natural Science Foundation of China (Grant Nos. 50674008 and 50634010) and the Program for New Century Excellent Talents in University of China (Grant No. NCET-06-0083)

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Liu, X., Wu, Y. & Xie, J. Deformation behavior of Cu-12wt%Al alloy wires with continuous columnar crystals in dieless drawing process. Sci. China Ser. E-Technol. Sci. 52, 2232–2236 (2009). https://doi.org/10.1007/s11431-009-0236-8

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  • DOI: https://doi.org/10.1007/s11431-009-0236-8

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