Influence of the chemical composition on the β-relaxation and the mechanical behavior of LaCe-based bulk metallic glasses

Cui, Xiao; Guo, Jing; Qiao, J.C.; Zu, Fang‐Qiu; Li, Jinjing; Yan, Ying; Guo, Peng

doi:10.1016/j.jnoncrysol.2021.120779

Cited by 3 publications

(1 citation statement)

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“…In the temperature range of 600 K-730 K, the loss and storage moduli show the sharp increasing and decreasing trends, respectively. is event is associated to the β and α relaxations, occurring under the glass transition temperature [29,30]. Finally, the contradictory behavior of moduli above 770 K is correlated to the nucleation and growth of crystals in the microstructure [25].…”

Section: Resultsmentioning

confidence: 95%

Influence of Microalloying Process on Dynamic Mechanical Relaxation of ZrCo-Based Amorphous Alloy

Romero-Parra

Patra

Fahim³

et al. 2022

Advances in Materials Science and Engineering

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In this study, the dynamic mechanical spectroscopy was used to characterize the effects of minor Ni addition on the relaxation behavior of ZrCoAl bulk metallic glass (BMG). For this purpose, the Kohlrausch–Williams–Watts (KWW) function and quasi-point defect (QPD) model were used for evaluation of relaxation under the different aging temperatures. The results indicated that the Ni addition shifted the relaxation process to the higher temperatures. Moreover, the estimations showed that the activation energy of relaxation was 5.951 eV and 6.205 eV for ZrCoAl and ZrCoAlNi, respectively. It was also revealed that the microalloying process enhanced the structural defects in the system and led to the improvement of dynamic heterogeneity in the BMG. Comparing the physical models, it is suggested that a small change in the structural defects intensifies the dynamic heterogeneity in the material.

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Section: Resultsmentioning

confidence: 95%