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

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

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 trea...

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Bibliographic Details
Main Authors: Marcio Andreato Batista Mendes, Claudio Shyinti Kiminami, Walter José Botta Filho, Claudemiro Bolfarini, Marcelo Falcão de Oliveira, Michael Joseph Kaufman
Format: Article
Language:English
Published: Associação Brasileira de Metalurgia e Materiais (ABM); Associação Brasileira de Cerâmica (ABC); Associação Brasileira de Polímeros (ABPol) 2015-12-01
Series:Materials Research
Subjects:
metallic glass
rapid-solidification
Kissinger method
ternary alloy systems
Online Access:http://www.scielo.br/pdf/mr/v18s2/1516-1439-mr-18-S02-104.pdf
Description
Summary: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.
ISSN:1516-1439

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