Crystallization behavior of Fe62Nb8−Zr B30 bulk amorphous alloy

Influence of composition in the crystallization process of Fe75−Nb10B15+ metallic glasses

“…The pattern corresponding to alloy Fe 65 (Fig. 2(a)) shows the precipitation of two different phases identified as Fe 23 B 6 type phase and bcc-Fe [7][8][9] after the first peak although Transmission Mö ssbauer Spectroscopy [10] experiments have determined that the percentage of bcc-Fe phase is small. In the second stage precipitates Fe 3 B-orthorombic and finally the fully crystalline sample contains bcc-Fe, Fe 2 B and FeNbB which correspond to the predicted stable phases in the ternary phase diagram [11].…”

“…Recently, alloys with lower content of Fe and higher content of B and different TM (Zr, Nb) have been studied with the aim to obtain better thermal stability and a wider supercooled liquid region. Some of those alloys have been reported as good candidates for soft magnetic applications [7][8][9]. These studies show differences in the primary crystallization process leading to differences in the structure and phases.…”

Modification of the Ti40Cu36Zr10Pd14 BMG Crystallization Mechanism with Heating Rates 10-140 K/min

“…The E a is usually determined with Kissinger method ( Ref 7,8,20,23). It was revealed that the straight line obtained for the E a evaluation refers not only to the high heating rates but also to heating rates from 10 to 140 K/min.…”

“…where b is the heating rate and R gas constant (Ref 19,20). Table 2 shows that the nucleation frequency of the primary crystallization is smaller than of the secondary one and clearly increases from 1.3exp(14) to 4.1exp(17) when small heating rate was included.…”

“…Determination of E a also enables establishing another valuable parameter, which is nucleation frequency Z nf (Ref 19,20). It is assumed that nucleation and growth processes participate in both steps of crystallization of the experimentally detected CuTi phase.…”