Evolution of the crystalline phase with annealing temperature in Fe89Zr7B4 alloy

Non-isothermal crystallization kinetics of FeZrB amorphous alloy

“…It is indicated that the crystallization of the Fe 78 Zr 7 B 15 alloy exhibits two distinct steps. Some researchers have confirmed these two exothermic peaks corresponding to ␣-Fe and Fe-B(Zr) phases, respectively [3][4][5]. It can be observed that the exothermic peak shifts to higher temperatures with the increasing heating rates due to thermodynamic effect.…”

“…The crystallization reaction occurs stably in the x region of 0.1-0.9 and x increases sharply in this range. (3) In the x range of 0.1-0.9, the first crystallization step is dominated by low dimensional nucleation and growth, and the second is governed by three dimensional nucleation and growth. The nucleation rates of these two steps both increase first and then reduce.…”

“…Annealing results in different crystalline phases with different dimensions, which can seriously influence the soft magnetic properties of Nanoperm alloy. During the crystallization process, ␣-Fe phase and Fe-B(Zr) phases successively precipitated [3][4][5]. Herzer et al found that the particle of crystallized ␣-Fe phase was small and the exchange interaction between ␣-Fe grains and amorphous matrix was strong.…”

“…Therefore, the ␣-Fe/amorphous dual phase structure can improve the soft magnetic properties [6]. On the other hand, the particle of Fe-B(Zr) phase can deteriorate the soft magnetic properties because Fe-B(Zr) phase can largely weaken the exchange interaction and increase the magneto-crystalline anisotropy [3,[7][8][9]. Thus, the research on the crystallization kinetics * Corresponding author.…”

Structure and magnetic properties of Nb-doped FeZrB soft magnetic alloys

“…The maximum increments of these two parameters, for the Nb 6 alloy, are 68 and 93 1C, respectively. It is believed that the crystallization starts at T x1 , with the first exothermic peak corresponding to the precipitation of a-Fe phase [22]. A shift of T x1 to a higher value indicates an increase in the precipitation temperature for a-Fe phase.…”