Influences of Si and Co addition on microstructure and damping capacity of Fe-Mn alloy

Joong Hwan Jun, Young Kook Lee, Jeong Min Kim, Ki Tae Kim, Woon Jae Jung

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9 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)85-90
Number of pages6
JournalKey Engineering Materials
Publication statusPublished - 2006

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering


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