Transactions of the Korean Society of Machine Tool Engineers (한국공작기계학회논문집)

The Korean Society of Manufacturing Technology Engineers (한국생산제조학회)
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Influence of Carbon Content on the Mechanical Properties of the Ni-Co Alloy

Ni-Co 합금강의 기계적 특성에 대한 탄소함량의 영향

  • 최병기 (조선대학교 기계공학과) ;
  • 장경천 (한국생산기술연구원) ;
  • 최병희 (조선대학교 대학원 기계공학과) ;
  • 이기안 (안동대학교 신소재공학과)
  • Published : 2006.10.15
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Abstract

This study was to evaluate the effect of carbon content on metallic change and fatigue characteristics with Fe-29%Ni-17%Co, low heat expansion alloy, widely using electronic components, precision machines, and sealing with glass and metal etc. The steels were fabricated with variation of carbon content, 0, 0.03, 0.06, 0.1, and 0.20% with VIM and tensile test and fatigue test were performed to achieve the above purpose. The more carbon content, the higher hardness value and yield strength. But elongation of 0.03%C, 0.06%C, and 0.10%C specimen decreased about 2.2%, 1.5% and 0.8% respectively more than that of the base metal. Especially the strength and elongation of 0.20%C specimen increased simultaneously about 14.4% and 7.5%. Fatigue life of 0.03%C specimen decreased but the more carbon content, the higher fatigue life over 0.06% carbon content more than that of base metal.

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References

  1. Gehrmann, B., Heubner, U. and Kolb-Telieps, A. Ed. J. W., 1992, 'The Minearls,' Metals and Materials Society, p. 3
  2. Harner, L. L., Stephens, J. J. and Frear, D. R., 1992, 'The Minerals,' Metals and Materials Society, p. 3
  3. Kwon, Y. J. and Lee, C. M., 1999, 'Silicidation and Thermal Stability of the Co/refractory Metal Bilayer on the Doped Polycrystalline Si Substrate,' J. of the Korean Ceramic Society, Vol. 36. No. 6, pp. 604-610
  4. Choi, C. S. and Kim, Y. S., 1991, 'Study on Recrystallization of Ni-Co Alloys,' J. of the Korean Inst. of Met. & Mater., Vol. 29, No. 9, pp. 902-910
  5. Choi, C. S. and Suzuki, T., 1983, 'Study on Deformed Structures of Ni-Co Alloys,' J. of the Korean Inst. of Metals, Vol. 21, No. 9, pp. 796-801
  6. Park, Y. B., Raabe, D. and Yim, T. H., 1996, 'Rolling and Recrystallization Textures in Fe-Ni Alloys,' J. of the Korean Inst. of Met. & Mater., Vol. 2, No. 3, pp. 151-157
  7. Lee, K. A., Park, J. H., Choi, B. H., Jung, N. G. and Kim, M. C., 2003, 'Hot Deformation and Thermal Expansion Behavior of Fe-Ni-Co Low Thermal Expansion Alloy,' J. of Inst. Met. & Mater., Vol. 41, No. 9, pp. 539-549
  8. Park, Y. B., Raabe, D. and Yim, T. H., 1996, 'Rolling and Recrystallization Textures in Fe-Ni Alloys,' Metal and Materials, Vol. 2, No. 3 pp. 151-157 https://doi.org/10.1007/BF03026089
  9. Kim, D. K., Kim, D. H., Choo, D. K. and Moon, H. K., 1996, 'Microstructural evolution in a strip-cast Ni-base superalloy,' Metal and Materials, Vol. 2, No. 4, pp. 211-217 https://doi.org/10.1007/BF03026095
  10. Grujicic, M., 1991, 'Implication of Elastic Coherency in Secondary Harening of High Co-Ni Matensitic Steels,' Journal of Materials Science, Vol. 26, No. 5, pp. 1357-1362 https://doi.org/10.1007/BF00544477
  11. Annual Book of ASTM Standards, Section 3, 1996, 'Matals Test Methods and Analytical Procedures,' E 8M-96, Standard Test Methods for Tension of Metallic Materials, pp. 76-96
  12. Annual Book of ASTM Standards, Section 3, 1996, Matals Test Methods and Analytical Procedures, E 647-96, Standard Test Methods for Measurement of Fatigue Crack Growth rates, pp. 565-601
  13. Choi, B. K. and Jang, K. C., 2002, 'A Study on the Fatigue Crack Propagation in the SB41 Welding Material,' Transactions of the Korean Society of Machine Tool Engineers, Vol. 11, No. 2, pp. 43-49
  14. ASTM E647-83, 1985, Standard Test Method for Constant-Load Amplitude Fatigue Crack Growth Rate Above $10^{-8}$mm/Cycle, pp. 765-783
  15. Paris, P. C. and Erdogan, F., 1963, 'A critical analysis of crack propagation laws,' J. Basic eng., Trans., ASME, Vol, 85, No. 4, p. 528 https://doi.org/10.1115/1.3656900
  16. David Broek, 1986, Elementary Engineering Fracture Mechanics, pp. 57-68