Journal of the Korean Society for Heat Treatment (열처리공학회지)

The Korean Society for Heat Treatment (한국열처리공학회)
권호 표지
DOI QR코드

DOI QR Code

Characterization of Continuous Cast Cu-Ni-Si Alloys

연속주조된 Cu-Ni-Si계 합금의 특성평가

  • Lee, Jung-Il (Dept. of Materials Science and Engineering, Korea National University of Transportation) ;
  • Cho, Hoon (Foundary Technology Center, Korea Institute of Industrial Technology)
  • 이정일 (한국교통대학교 신소재공학과) ;
  • 조훈 (한국생산기술연구원 주조공정연구그룹)
  • Received : 2012.08.09
  • Accepted : 2012.10.07
  • Published : 2012.11.30
Download PDF
⟨ Previous Next ⟩

Abstract

In this study, Cu-2.5at.%Ni-1at.%Si alloys were fabricated by horizontal continuous casting system to improve the electrical conductivity and mechanical properties of Cu-Ni-Si alloy. Withdrawing speed was changed with 50, 100, 150 and 200 mm/min for the optimum manufacturing condition. Microstructure was observed using OM, FE-SEM and TEM. Electrical conductivity was measured by 4-point probe method and mechanical properties were tested. A horizontal continuous cast thin slab had sound macro and micro structures with partly crystallized structures. Electrical resistivity decreased with increasing annealing temperature from 250 to $850^{\circ}C$, with increasing annealing temperature The maximum hardness and tensile strength were Hv 130, 610 MPa at $550^{\circ}C$, respectively. With changing withdrawing speed from 50 to 150 mm/min, hardness, tensile strength, yield strength and elongation were Hv 60-65, 210-230 MPa, 65-75 MPa and 40-50%, respectively.

Keywords

References

  1. H. Cho, B. S. Lee, and H. H. Jo : Trends in Met. & Mater. Eng., 21, 2 (2008) 21.
  2. A. Benghalem and D. G. Morris : Acta mater. 45 (1999) 397.
  3. Y. Sakai and H. J. Schneider-muntau : Acta Mater. 45 (1997) 1017. https://doi.org/10.1016/S1359-6454(96)00248-0
  4. E. Botcharova et. al. : Materials Science Engineering A, 416 (2006) 261. https://doi.org/10.1016/j.msea.2005.10.022
  5. H. Tsubakino and R. Nozato : J. Jpn. Inst. Metals, 43 (1979) 42. https://doi.org/10.2320/jinstmet1952.43.1_42
  6. V. A. Phillips and L. E. Tanner : Acta Metall., 21 (1973) 441. https://doi.org/10.1016/0001-6160(73)90201-0
  7. T. J. Louzon : castings, 1 (1984) 26.
  8. J. T. Plews : Metall. Trans. A, 6 (1975) 537. https://doi.org/10.1007/BF02658411
  9. W. Leo : Metallurgy, 21 (1967) 908.
  10. A. Sato, S. Katsuta, and M. Kato : Acta Metall., 36 (1988) 633. https://doi.org/10.1016/0001-6160(88)90097-1
  11. R. K. Ray and S. C. Narayanan : Metall. Trans. A, 13 (1982) 565.
  12. J. M. Lee, Y. C. Jung, S. Z. Han, and C. J. Kim : J. Kor. Inst. Met. & Mater., 36 (1998) 1215.
  13. Y. C. Jung, S. S. Byun, J. M. Lee, S. Z. Han, and C. J. Kim : J. Kor. Inst. Met. & Mater., 37 (1999) 657.
  14. S. Z. Han, H. I. Kim, J. M. Lee, Y. C. Jung, and C. J. Kim : J. Kor. Inst. Met. & Mater., 37 (1999) 1882.
  15. J. M. Lee, J. W. Lee, S. Z. Han, Y. C, Jung, and C. J. Kim : J. Kor. Inst. Met. & Mater., 38 (2000) 427.
  16. Hitachi cable review, No. 25 (August 2006).
  17. Kobe steel engineering reports, 54 (April 2004).
  18. T. Endo, K. Takenouchi, M. Nishihata, T. Asano, and A. Sugawara : US Patent 5322575.
  19. R. Futatsuka, S. Chiba, J. Kumagai, T. Idoshita, and S. Noguchi : European Patent EP0502455.
  20. R. Futatsuka, Y. Koshiba, S. Chiba, T. Orikasa, S. Noguchi, and T. Idoshita : US Patent 5024814.
  21. N. Igata and Y. Nakasato : US Patent 4761265.