Journal of the Korean Society for Heat Treatment (열처리공학회지)

The Korean Society for Heat Treatment (한국열처리공학회)
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The Influence of Alloying Elements Addition on the Electrical and Mechanical Properties of Cu-Ni-Si-P Alloy

Cu-Ni-Si-P 합금의 기계적 및 전기적 성질에 미치는 첨가원소의 영향

  • Kim, Seung-Ho (School of Mechanical Engineering, University of Ulsan) ;
  • Yum, Young-Jin (School of Mechanical Engineering, University of Ulsan) ;
  • Park, Dong-Hwan (Institute of e-Vehicle Technology, University of Ulsan)
  • 김승호 (울산대학교 공과대학 기계공학부) ;
  • 염영진 (울산대학교 공과대학 기계공학부) ;
  • 박동환 (울산대학교 자동차선박기술 대학원)
  • Received : 2013.10.21
  • Accepted : 2013.11.12
  • Published : 2014.01.30
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Abstract

For connector material applications, the influence alloying elements of Mn, Cr, Fe, and Ti and cold rolling reduction on the mechanical property, electrical conductivity and bendiability of Cu-Ni-Si-P alloy was investigated. The hot rolled plates were solution treated at $980^{\circ}C$ for 1.5 h, quenched into water, cold rolled by 10% and 30% reduction in thickness, and then aged at $440{\sim}500^{\circ}C$ for 3, 4, 5 times. respectively. Cu-Ni-Si-P-x alloys cold rolled by 10 reduction before heat treatment have a good bendability compare to cold rolled by 30 reduction. Cu-3.4Ni-0.8Si-0.03P-0.1Ti shows the peak strength value of 759 MPa, an electrical conductivity of 39%IACS, an elongation of 10% and a hardness of 256 Hv aged at $440^{\circ}C$ for 6 hrs. Thus it is suitable for lead frame and connector.

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References

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