Effect of aging temperature on the crystallization characteristics of bulk fe-based amorphous alloys

Abstract The high hardness performance of Fe-based amorphous alloys give them unique advantages in the field of wear-resistant materials, while the performance degradation after crystallization limits their application range. In this study, rod-shaped bulk Fe 41 amorphous alloy was prepared, and its crystallization characteristics were studied in response to its high temperature conditions in wear service environment. Aging treatments were carried out on the materials at different temperatures, and the characteristics and mechanism of amorphous alloy crystallization transformation were analyzed. The research results indicate that the crystallization rate of Fe 41 bulk amorphous alloy exhibits a bilinear characteristic with increasing temperature, and the transformation temperature at which crystallization significantly accelerates is between 180 °C and 250 °C. The main reason for the surface crystallization of Fe 41 bulk amorphous alloy is the local stress release caused by the detachment of the second phase under aging temperature conditions. For the interior of the material, structural constraints effectively suppress crystallization transformation within 350 °C.