Influences of Si and Co Addition on Microstructure and Damping Capacity of Fe-Mn Alloy

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Microstructures and damping properties have been investigated in Fe-23%Mn-(0~2)%Si and Fe-23%Mn-(0~2)%Co alloys, based on experimental results from metallography, X-ray diffractometry and vibration test in a flexural mode. The amount and number density of ε martensite are increased with an increase in Co content, resulting in the improvement of damping capacity. For the same ε martensite content, the higher the Co content, the greater the damping capacity. On the contrary, an addition of Si affects to decrease the amount and number density of ε martensite, giving rise to a decay of damping capacity. The decreased ε martensite content by the addition of Si would be attributed to an increase in critical driving force for the γ→ε martensitic transformation by solution hardening effect.

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Periodical:

Edited by:

N. Igata and S. Takeuchi

Pages:

85-90

DOI:

10.4028/www.scientific.net/KEM.319.85

Citation:

J. H. Jun, Y. K. Lee, J. M. Kim, K. T. Kim, W. J. Jung, "Influences of Si and Co Addition on Microstructure and Damping Capacity of Fe-Mn Alloy", Key Engineering Materials, Vol. 319, pp. 85-90, 2006

Online since:

September 2006

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$35.00

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