Abstract
Damping behavior of Fe-16.0∼28.0at%AI and Fe-23.0at%AI-2.0at%M (M=Cr, Mn, Co, Ni) in the wide strain amplitude range was examined and the damping mechanism was discussed. In Fe-AI binary single crystals, magneto-mechanical damping caused by irreversible motion of magnetic domain walls took place at low strain amplitudes. On the other hand, pseudoelasticity based on reversible motion of 1/4(111) super- partial dislocations appeared in Fe-23.0at%AI single crystals which also contributed to the high damping capacity at high strain amplitudes. The effect of Cr, Mn, Co and Ni on the vibration attenuation of Fe-23.0at%AI crystals was also examined. As a result, Ni doping was found to be effective in the increase in both internal friction and yield strength of Fe-AI alloys.
Original language | English |
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Pages (from-to) | 1630-1635 |
Number of pages | 6 |
Journal | Isij International |
Volume | 49 |
Issue number | 10 |
DOIs | |
Publication status | Published - 2009 |
Externally published | Yes |
Keywords
- Damping materials
- Internal friction
- Magneto-mechanical damping
- Pseudoelasticity
ASJC Scopus subject areas
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry