Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7990035 | Journal of Alloys and Compounds | 2018 | 10 Pages |
Abstract
The mechanical relaxation characteristics of in-situ Ti48Zr20V12Cu5Be15 metallic glass matrix composite with dendrites reinforced are investigated by using mechanical spectroscopy. An abnormal internal friction behavior below the glass transition temperature is detected. Considering the irreversible feature and based on the transmission electron microscopy analysis, the abnormal internal friction behavior is mainly induced by the precipitation of nanocrystals in the dendritic phase. In order to understand better the dynamic mechanical properties of the Ti48Zr20V12Cu5Be15 metallic glass matrix composite, the kinetic characteristics of glass transition are analyzed in the framework of quasi-point defects theory. In addition, an isothermal annealing conducted at lower than the glass transition temperature induces a significant change on both modulus and loss factor, the kinetics of relaxation under annealing can be well described by the stretched exponential relaxation equation.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Guojian Lyu, Jichao Qiao, Ji Gu, Min Song, Jean-Marc Pelletier, Yao Yao,