Damping Capacity of the Fe-Cr-Al Based Alloys

Abstract:

Based on the damping alloy Fe-13Cr-6Al, five types of alloys are prepared in the present study with 1 at.% of Cr replaced by Mo, Mn or Nb, and 0.5 at.% of Al replaced by Cu. The effects of annealing temperature, vibrating frequency, strain-amplitude and static load on the damping capacity of these alloys are studied through damping capacity measurement and optical microscope observation. The following results were obtained: (1) The damping capacity of Fe-13Cr-6Al based alloys increases with increasing annealing temperature. (2) The replacing elements demonstrate different effects on the damping capacity of Fe-13Cr-6Al based alloys. The damping capacity of the alloys with Cu or Mn substitution increases, while that of alloys with Nb substitution decreases significantly as compared with Fe-13Cr-6Al. (3) The damping capacity of Fe-13Cr-6Al based alloys is not sensitive to frequency. It decreases with increasing in static load, and increases rapidly with strain before reaching a steady state.

• Periodical: Materials Science Forum (Volumes 475-479)
• Pages: 261-264
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.475-479.261
• Online since: January 2005
• Authors: Renrong Lin, Ming Zhou Cao, Rui Yang
• Keywords: Damping Capacity, Fe-Cr-Al Alloy, Frequency, Static Load, Strain-Amplitude

References

[1] K. Amano, M. Sahashi, H. Tokoro et al.: ICIFUAS-6. Proceedings of the Sixth Int. Conf. on Internal Friction and Ultrasonic Attenuation In Solids (July, 1977, Tokyo, Japan), P. 763.

[2] A.W. Cochardt: Journal of Applied Physics Vol. 25, No. 5 (1954), P. 670-673.

[3] R.M. Bozorth: Ferromagnetism, Van Nostrand Press (1951, New York, US), P. 687.

[4] G.W. Smith, J.R. Birchak: Journal of Applied Physics Vol. 40, No. 13 (1969), P. 5176.

[5] M.L. Guo: Dynamic Mechanical Thermal Analysis of High Polymer and Composite Materials, Chemical Industry Press (2002), P. 21-29 (in Chinese).