Abstract
In this study, the stress relaxation of amorphous Fe0.7Nb0.1Ti0.1Zr0.1 alloy was investigated by differential thermal analysis (DTA) to enhance the soft magnetic properties. Amorphous Fe0.7Nb0.1Zr0.1T0.1 alloy was produced by mechanical alloying technique using the mixture of pure elements and without adding metalloids. It was found that the stress relaxation process follows the Johnson-Mehl-Avrami model and the mechanism was volume diffusion control with three dimensional growth of the nuclei. The relation of stress relaxation progress (α), with time was proposed as: dαdt=βdαdT=3.04exp−4312RT1−α−ln1−α0.37. The final achieved microstructure leads to higher saturation magnetization and lower coercivity that are favorable for soft magnetic applications.
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