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

Author:

Nykyruy Yulia S.1,Mudry Stepan I.1,Kulyk Yuriy O.1,Lapinski Marcin2

Affiliation:

1. Ivan Franko Lviv National University , Physics of Metals Department , 8 Kyrylo and Mephodyj St., Lviv, 79005 , Ukraine

2. Gdańsk University of Technology , Department of Solid State Physics , 11/12 Narutowicza St., Gdansk, 80-233 , Poland

Abstract

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.

Publisher

Walter de Gruyter GmbH

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science

Reference19 articles.

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2. [2] Mudry S., Kulyk YU., J. Phys. Conf. Ser., 289 (2011), 012006.

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4. [4] Girzhon V.V., Smolyakov A.V., Babich N.G., Semen’ko M.P., Phys. Met. Metall., 108 (2) (2009), 125.

5. [5] Girzhon V.V., Smolyakov A.V., Zakharenko N.I., Babich N.G., Semen’ko M.P., Phys. Met. Metall., 111 (6) (2011), 561.

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