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COPPER ALLOY AND METHOD FOR PRODUCING COPPER ALLOY

Foreign code F120006947
File No. S2011-0587
Posted date Oct 17, 2012
Country WIPO
International application number 2012JP058358
International publication number WO 2012/133651
Date of international filing Mar 29, 2012
Date of international publication Oct 4, 2012
Priority data
  • P2011-077725 (Mar 31, 2011) JP
Title COPPER ALLOY AND METHOD FOR PRODUCING COPPER ALLOY
Abstract

Provided is a copper alloy, which has a composition, by at%, represented by the composition formula Cu100-a-b-c(Zr,Hf)a(Cr,Ni,Mn,Ta)b(Ti,Al)c [where 2.5?a?4.0, 0.1<b?1.5, 0?c?0.2, (Zr,Hf) is one or two of Zr and Hf, (Cr,Ni,Mn,Ta) is one, two or more of Cr, Ni, Mn, and Ta, (Ti,Al) is one or two of Ti and Al]

has a Cu primary crystal wherein the average secondary dendrite arm interval is 2 [mu]m or less

has a eutectic matrix having a lamellar interval of 0.2 [mu]m or less that is formed from a quasistable Cu5(Zr,Hf) compound phase and a Cu phase

is beryllium-free

and has high strength and high conductivity, as well as good bendability. Also provided is a method for producing a copper alloy.

  • Applicant
  • ※All designated countries except for US in the data before July 2012
  • TOHOKU UNIVERSITY,
  • INOUE AKIHISA,
  • NISHIYAMA NOBUYUKI,
  • YAMAZAKI HARUKO
  • Inventor
  • INOUE AKIHISA,
  • NISHIYAMA NOBUYUKI,
  • YAMAZAKI HARUKO
IPC(International Patent Classification)
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