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- E-ISSN 2288-8985
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Effects of Heat Treatment on Damping Characteristics of Fe-Al Alloys
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
1996, v.9 no.3, pp.302-309
Lee,
J., Kim,
K., Kim,
D., Lee,
K., &
Shin,
M.
(1996). Effects of Heat Treatment on Damping Characteristics of Fe-Al Alloys. Analytical Science and Technology, 9(3), 302-309.
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Abstract
Fe-5.7%AI-1.1%Cr-0.5%Si damping alloys containing 0%C and 0.12%C were heat-treated at <TEX>$800^{\circ}C$</TEX> for an hour and then cooled by using some different methods. The damping behaviors of these alloys were observed by optical microscopy, X-ray diffraction and a specific damping capacity(SDC) test. Effect of cooling method on microstructures and the internal stresses of these alloys were negligible while the damping capacity of these alloys was considerably deteriorated by water quenching. The (200) texture was mainly developed by water quenching while the (110) texture by furnace cooling. These results were interpreted by the magnetization behaviors of the ferromagnetic <TEX>$\alpha$</TEX> ferrite. The easy axis of magnetization in <100> direction means that <100> axis has more <TEX>$180^{\circ}$</TEX> magnetic domain walls than <TEX>$90^{\circ}$</TEX> ones. Thus. <TEX>$180^{\circ}$</TEX> magnetic domain walls were more formed by water quenching, which deteriorated the damping capacity of these alloys. Consequently, the amount of magnetic domain walls giving good damping capacity became less so that the damping capacity was poor in water quenching.
- keywords
- Fe-AI base damping alloy, specific damping capacity, texture, magnetic domain wall
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