Grain size effects on magnetomechanical damping properties of ferromagnetic Fe–5 wt.% Al alloy

✍ Scribed by Young Ik Seo; Baek-Hee Lee; Young Do Kim; Kyu Hwan Lee

• Publisher: Elsevier Science
• Year: 2006
• Tongue: English
• Weight: 435 KB
• Volume: 431
• Category: Article
• ISSN: 0921-5093
• DOI: 10.1016/j.msea.2006.05.083

✦ Synopsis

To clarify the effects of grain size on the damping capacity of a ferromagnetic Fe-5 wt.% Al alloy with an average grain size of 130-845 m, the magnetomechanical properties and microstructures were studied. The results showed a maximum damping capacity at a certain average grain size. Thus, it was proposed that the damping capacity is proportional to the total area of the 90 • domain walls represented by the mean 90 • domain width and the saturation magnetostriction. It can be reasonably explained that with grain growth, the saturation magnetostriction increases and the total area decreases. Leading to the result of a maximum damping capacity at a certain average grain size where the best combination of the two factors was found.