Modeling of the Sub-Tg Relaxation Spectrum of Pd42.5Ni7.5Cu30P20 Metallic Glass

Chaoren Liu, Eloi Pineda, Jichao Qiao, Daniel Crespo

科研成果: 期刊稿件文章同行评审

5 引用 (Scopus)

摘要

We study the mechanical relaxation spectrum of Pd42.5Ni7.5Cu30P20 metallic glass. The effect of aging on the relaxation behavior is analyzed by measuring the internal friction during consecutive heating runs. The mechanical relaxation of the well-annealed glass state is modeled by fitting susceptibility functions to the primary and secondary relaxations of the system. The model is able to reproduce the mechanical relaxation spectrum below the glass transition temperature (sub-Tg region) in the frequency-temperature ranges relevant for the high temperature physical properties and forming ability of metallic glasses. The model reveals a relaxation spectrum composed by the overlapping of primary and secondary processes covering a wide domain of times but with a relatively narrow range of activation energies.

源语言英语
页(从-至)2838-2844
页数7
期刊Journal of Physical Chemistry B
120
10
DOI
出版状态已出版 - 17 3月 2016

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