Effect of cold drawing on electrical and mechanical properties of Cu-5at% Zr alloy

Hisamichi Kimura, Hiroaki Matsumoto, Akihisa Inoue

研究成果: Article査読

4 被引用数 (Scopus)

抄録

The effects of cold drawing on electrical- and mechanical properties of Cu-5 at% Zr alloy were examined as a function of a drawing ratio (η), and were discussed in relation to the microstructural evolution under drawing process. Microstructure was changed by drawing into the fine fibrous elongated structure with alternating phases of Cu solid solution (Cu55) and CU9Zr2 intermetallic (CU9Zr2). Electrical conductivity increases by cold drawing up to η = 5.9 as compared with that for the as-cast state, whose relative electrical conductivity is 24 %IACS (IACS: international annealed copper standard). The %IACS shows a maximum value of 36% IACS at η = 2.2. It was suggested that the microstructural formation of net-like Cuss phase parallel to the drawing direction enhanced the electrical conductivity by drawing process. Moreover, the strength increased with the increase in the drawing ratio. The increase in the strength can be reasonably explained by the effect of work hardening and the refinement of microstructure. Thus, it was found that the combination of high electrical conductivity of 31∼36% IACS and high tensile strength of 1113∼1798 MPa was achieved in Cu-5 at% Zr alloy by cold drawing.

本文言語English
ページ(範囲)2674-2678
ページ数5
ジャーナルMaterials Transactions
48
10
DOI
出版ステータスPublished - 2007 10

ASJC Scopus subject areas

  • 材料科学(全般)
  • 凝縮系物理学
  • 材料力学
  • 機械工学

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