Effects of Cr and Ni on Damping Capacity and Corrosion Resistance of Fe-17%Mn Alloy

Fe-17%Mn 합금의 진동감쇠능 및 내식성에 미치는 Cr, Ni 첨가의 영향

  • Kim, Jung-Chul (Research Institute of Measuring Technology, Woojin Inc.) ;
  • Han, Dong-Woon (Research Institute of Measuring Technology, Woojin Inc.) ;
  • Back, Jin-Hyun (Research Institute of Measuring Technology, Woojin Inc.) ;
  • Kim, Tai-Hoon (Research Institute of Measuring Technology, Woojin Inc.) ;
  • Baik, Seung-Han (Research Institute of Measuring Technology, Woojin Inc.) ;
  • Lee, Young-Kook (Dept. of Metallurgical Engineering, Yonsei University)
  • Published : 2005.04.20

Abstract

Effects of Cr and Ni addition on damping capacity, mechanical property, and corrosion resistance of Fe-17%Mn martensitic alloy have been studied. Martensite start temperature($M_{S}$) of the alloy decreases linearly with increasing Cr and Ni contents up to 15%. The damping capacity decreases gradually from 27 to 22% in specific damping capacity(SDC) with increasing Cr and Ni contents from zero to 10%, and decreases rapidly with further Cr and Ni content in Fe-17%Mn alloy. The tensile strength of the alloy maintains a level of 60 $kgf/mm^{2}$ regardless of Cr content with an elongation of 20 to 25%. But, in case of Fe-17%Mn-x%Ni alloy, the tensile strength decreased rapidly with the Ni content of above 10% because of austenite morphology. Immersion test in 5% NaCl solution leads to the result that the corrosion resistance of the alloy becomes excellent above 10% Cr. From the above results, it is concluded that the optimum Cr content to improve the mechanical property and corrosion resistance of the alloy in 5%NaCl solution with a lesser decrease in damping capacity is about 10%. In the case of 5% $H_{2}SO_{4}$ condition, the Fe-17%Mn-10%Ni is an optimum alloy.

Keywords

References

  1. R. D. Adams: Journal of Sound and Vibration, 23 (1972) 199-205 https://doi.org/10.1016/0022-460X(72)90560-3
  2. S. Kyuichi: Bull. Jpn. Inst. Met., 14 (1974) 127-131
  3. S. H. Baik, J. C. Kim, K. K. Jee, M. C. Shin and C. S. Choi : Journal de Physique .S, 5 (1995) C8-391-395
  4. S. H. Baik, J. C. Kim, K. K. Jee and C. S. Choi : J. Korean Society for Heat Treatment, 8 (1995) 113-117
  5. S. H. Baik, J. C. Kim, K. K. Jee, M. C. Shin and C. S. Choi : J. Korean Society for Heat Treatment, 8 (1995) 197-200
  6. S. H. Baik, J. C. Kim, K. K. Jee, M. C. Shin and C. S. Choi : J. Korean Society for Heat Treatment, 9 (1996) 53-58
  7. C. S. Choi, Woojin Inc. : Korea Pat., No.057437 (1992)
  8. J. C. Kim, C. S. Choi: J. Kor. Inst. Met. & Mater., 9 (1992) 45
  9. A. W. Cochardt: Trans. AIME, 226 (1956) 1295-1302
  10. L. M. Schetky and J. Perkins: Machine Design, April 6 (1978) 202-207
  11. B. L. Averbach and M. Cohen: Trans. Met. Soc. AIME, 176 (1948) 401-409
  12. J. Burke and D. W. Harvey: J. Iron and Steel Inst., 208 (1970) 779-785
  13. B. D. Cullity : Elements of X-ray Diffraction, Addison-Wesley Publishing Co., (1956) 139-144