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Glass Forming Ability and Crystallization Kinetics of Al-Mg-Ni-La Metallic Glasses

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Abstract:

Glass forming ability and crystallization kinetics of Al-Mg-Ni-La alloys have been investigated by X-ray diffraction (XRD) and differential scanning calorimetry (DSC). The maximum thickness achievable in glasses of Al76Mg11Ni8La5 and Al69Mg18Ni8La5 ribbons were 200 and 120 μm, respectively. The crystallization temperature and peak temperature indicated by DSC measurements displayed dependence on the heating rate during continuous heating, and were coincident with Lanoka’s relationship. The activation energies for the crystallization reaction Ex were obtained from the Kissinger’s equation. The results show the Mg addition is beneficial to the thermal stability of the amorphous phase.

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Periodical:

Advanced Materials Research (Volumes 960-961)

Pages:

161-164

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.960-961.161

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Online since:

June 2014

Authors:

Juan Mu*, Haifeng Zhang

Keywords:

Al Base Alloys, Crystallization Kinetics, Glass-Forming Ability, Thermal Stability

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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