Abstract
Ultrasonic absorption data in the range 50 KHz – 1.2 MHz are presented for the binary alloys Fe-7.8% Cr, Fe-3.8% Cr, Fe, Fe-1.5% Si, Fe-3.6% Mo and Fe-0.035% C. The magnetoelastic part of absorption is obtained by subtraction of the absorption obtained under magnetic saturation. It is found that the predominant part of absorption in all alloys is magnetoelastic in nature. It is predominantly the shear-viscosity coefficient that causes the damping. The bulk-viscosity coefficient is zero or near zero. Small coldwork causes a strong decrease of absorption via a decrease in permeability. Occasionally, in accordance with the theory by Becker and Döring, a broad absorption maximum appears in the investigated frequency range.
This research was performed under a Grant from Bethlehem Steel Corporation.
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© 1984 Plenum Press, New York
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Deka, M., Eberhardt, N. (1984). Internal Friction of Fe-Based Binary Alloys at High Frequency. In: Ruud, C.O., Green, R.E. (eds) Nondestructive Methods for Material Property Determination. Springer, Boston, MA. https://doi.org/10.1007/978-1-4684-4769-9_12
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DOI: https://doi.org/10.1007/978-1-4684-4769-9_12
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