The Vibrational Damping Capacity and Magnetoelastic Effect of an Fe-49 mass/100Co-2 mass/100V Alloy

摘要

The vibrational damping capacity and magnetoelastic effect were investigated for an Fe-49 mass/100 Co-2 mass/100V alloy. The alloy was water-quenched and air-quenched, and cooled slowly with and without a magnetic field of 16kA/m after heating at 1123 K for 2 h, respectively. Measurements of the logarithmic decrement (δ) and ΔΔE effect (ΔE/E_o) were carried out using a cantilever method, and the magnetic hysteresis curve was measured using a direct current BH tracer. The δand ΔE/E_o of alloy showed the maxima with the strain amplitude, and the maximum values became higher with decreasing cooling rate. The X-ray diffraction patterns showed the bcc lattice structure; only the reflection of the basic lattice in the water-quenched sample and ad- ditionally the reflection of the orded lattice in the slow-cooled samples.