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

AUTOR(ES)

Mendes, Marcio Andreato Batista, Kiminami, Claudio Shyinti, Botta Filho, Walter José, Bolfarini, Claudemiro, Oliveira, Marcelo Falcão de, Kaufman, Michael Joseph

FONTE

Mat. Res.

DATA DE PUBLICAÇÃO

2015-12

RESUMO

A good glass former, Ti57.4Cu33.4Ni9.2, was selected using the topological instability criterion (lambda criterion) and the average electronegativity approach. The crystallization behavior and microstructural development of amorphous melt-spun ribbons of this new composition in response to heat treatment were investigated using a combination of differential scanning calorimetry (DSC), transmission electron microscopy (TEM) and X-ray diffraction (XRD). The results indicate that the crystallization of the Ti57.4Cu33.4Ni9.2 alloy takes place through of three exothermic reactions with the nucleation of TiCu, Ti2Cu and Ti2Ni. The kinetics of crystallization were investigated by DSC, and the kinetic parameters were determined using Kissinger’s method.

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