<abstract xmlns="http://www.w3.org/1999/xhtml">

Laser-induced local crystallization in Finemet-type alloy was studied using X-ray diffraction, SEM and EDX methods. For investigated conditions of irradiation (wavelength λ = 1.06 μm, laser power density 50 W/cm2), it was found that primary crystallization starts with the formation of the nanocrystalline α-Fe(Si) solid solution at shorter exposure time and the second step crystallization with the nanocrystalline hexagonal H-phase formation occurs in longer exposure time. Changes in the local element concentration were observed at the surface of the irradiated zone and at the ribbon fracture. It was shown that the nonlinear temperature field due to the laser irradiation resulted in changes of the local elements concentration and this feature changed crystallization mechanism of the Finemet-type alloy.
</abstract>

Laser-induced local crystallization in Finemet-type alloy was studied using X-ray diffraction, SEM and EDX methods. For investigated conditions of irradiation (wavelength λ = 1.06 μm, laser power density 50 W/cm2), it was found that primary crystallization starts with the formation of the nanocrystalline α-Fe(Si) solid solution at shorter exposure time and the second step crystallization with the nanocrystalline hexagonal H-phase formation occurs in longer exposure time. Changes in the local element concentration were observed at the surface of the irradiated zone and at the ribbon fracture. It was shown that the nonlinear temperature field due to the laser irradiation resulted in changes of the local elements concentration and this feature changed crystallization mechanism of the Finemet-type alloy.

Nanocrystallization and phase formation in Fe73:5Nb3Cu1Si15:5B7 amorphous ribbon under laser heating

Materials Science-Poland

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Nanocrystallization and phase formation in FeNbCuSiB amorphous ribbon under laser heating

Laser-induced local crystallization in Finemet-type alloy was studied using X-ray diffraction, SEM and EDX methods. For investigated conditions of irradiation...

Nanocrystallization and phase formation in Fe_73:5Nb₃Cu₁Si_15:5B₇ amorphous ribbon under laser heating

Published Online: Apr 13, 2021

Page range: 526 - 534

Received: Feb 19, 2018

Accepted: Apr 23, 2019

DOI: https://doi.org/10.2478/msp-2020-0064

Keywords
laser-induced crystallization, amorphous metallic alloy, nanostructure

© 2020 Yulia S. Nykyruy et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Nanocrystallization and phase formation in Fe73:5Nb3Cu1Si15:5B7 amorphous ribbon under laser heating

Published Online: Apr 13, 2021

Page range: 526 - 534

Received: Feb 19, 2018

Accepted: Apr 23, 2019

DOI: https://doi.org/10.2478/msp-2020-0064

Keywordslaser-induced crystallization, amorphous metallic alloy, nanostructure

© 2020 Yulia S. Nykyruy et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Nanocrystallization and phase formation in Fe_73:5Nb₃Cu₁Si_15:5B₇ amorphous ribbon under laser heating

Keywords
laser-induced crystallization, amorphous metallic alloy, nanostructure