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International Journal of Latest Research in Science and Technology

DOI:10.29111/ijlrst   ISRA Impact Factor:3.35

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INFLUENCE OF STRUCTURAL RELAXATION ON DYNAMIC MECHANICAL BEHAVIORS OF A LA-BASED BULK METALLIC GLASS

Research Paper Open Access

International Journal of Latest Research in Science and Technology Vol.6 Issue 2, pp 30-33,Year 2017

INFLUENCE OF STRUCTURAL RELAXATION ON DYNAMIC MECHANICAL BEHAVIORS OF A LA-BASED BULK METALLIC GLASS

Jia Deng , Zhiqiang Dai , Zejun Zhang , Song Li

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Received : 19 April 2017; Accepted : 25 April 2017 ; Published : 30 April 2017

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Abstract

In this work, relaxation dynamics of La65Al14Ni5Co5Cu9.2Ag1.8 bulk metallic glass (BMG) have been investigated by dynamic mechanical spectroscopy. The primary relaxation is characterized by a single loss modulus E’’ and a rapid drop of storage modulus E’ in the supercooled liquid region. A distinct signature of slow β relaxation behavior in the E’’ curve appears below glass transition temperature and the corresponding E’ decreases with increasing temperature. The sub-Tg annealing treatment can improve the heterogeneity of this metallic glass by the consumption of free volume and leads to the decrease of the intensity of beta-relaxation before glass transition temperature.

Key Words   
La-based bulk metallic glass, Dynamic mechanical spectroscopy, β relaxation, Annealing

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To cite this article

Jia Deng , Zhiqiang Dai , Zejun Zhang , Song Li , " Influence Of Structural Relaxation On Dynamic Mechanical Behaviors Of A La-based Bulk Metallic Glass ", International Journal of Latest Research in Science and Technology . Vol. 6, Issue 2, pp 30-33 , 2017

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