Crystallization kinetics of a bulk amorphous Cu–Ti–Zr–Ni alloy investigated by differential scanning calorimetry

Phase formation and thermal stability in Cu–Zr–Ti(Al) metallic glasses

“…The JMA values are overall higher but this might be due to the difficulty in analyzing the DSC traces of the alloys with a higher Ti content (see Section 3.2). Such a discrepancy between isothermal and isochronal activation energies has been observed before [65,66]. Nevertheless the same trend becomes obvious: the activation energy of crystallization slightly decreases when the Ti content is increased from 0 to 5 at.%.…”

Crystallization Behavior of Amorphous Ti51.1Cu38.9Ni10.0 Alloy

“…Figure 5b illustrates the result of applying the Kissinger method to each exothermic peak, where it is shown that the activation energy E A of the two first reactions is roughly the same, indicating that a similar nucleation and growth process occurs in the first and second exothermic reactions, whereas a dominant growth process occurs in the third reaction. These activation energy values are in agreement with previous reports in literature 15,16 .…”

Influences of ion implantation on non-isothermal crystallization behaviors of bulk metallic glass

“…The growth of the overcritical nuclei and formation of new nuclei require simultaneous rearrangement of different species of atoms. Due to the dense randomly packed atomic configuration of multi-component amorphous alloy, diffusion of atoms is difficult, which retards the nucleation and growths of grains, leading to a decreasing nucleation rate [20]. In addition, high energy implanted Co ions might cause an annihilation of the free volumes and reduce voids through impacting the glassy matrix and reconstructing the atomic configuration, and these effects are related to the short-range rearrangement of atoms.…”