scholarly journals Intrinsic correlation between β-relaxation and spatial heterogeneity in a metallic glass

2016 ◽  
Vol 7 (1) ◽  
Author(s):  
F. Zhu ◽  
H. K. Nguyen ◽  
S. X. Song ◽  
Daisman P. B. Aji ◽  
A. Hirata ◽  
...  
Keyword(s):  
Metallic Glass ◽  
Spatial Heterogeneity ◽  
Intrinsic Correlation ◽  
Β Relaxation

Main α relaxation and slow β relaxation processes in a La30Ce30Al15Co25 metallic glass

2019 ◽  
Vol 35 (6) ◽  
pp. 982-986 ◽  
Author(s):  
J.C. Qiao ◽  
Y.H. Chen ◽  
R. Casalini ◽  
J.M. Pelletier ◽  
Y. Yao
Keyword(s):  
Metallic Glass ◽  
Relaxation Processes ◽  
Β Relaxation

Revealing β-relaxation mechanism based on energy distribution of flow units in metallic glass

2016 ◽  
Vol 144 (14) ◽  
pp. 144501 ◽  
Author(s):  
Z. Lu ◽  
B. S. Shang ◽  
Y. T. Sun ◽  
Z. G. Zhu ◽  
P. F. Guan ◽  
...  
Keyword(s):  
Metallic Glass ◽  
Energy Distribution ◽  
Relaxation Mechanism ◽  
Flow Units ◽  
Β Relaxation ◽  
Distribution Of Flow

scholarly journals Influence of Vibrational Loading on Deformation Behavior of Metallic Glass: A Molecular Dynamics Study

Metals ◽  
2019 ◽  
Vol 9 (11) ◽  
pp. 1197 ◽  
Author(s):  
Mao Zhang ◽  
Qiaomin Li ◽  
Jiacheng Zhang ◽  
Xinyun Wang ◽  
Junsong Jin ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Metallic Glass ◽  
High Frequency ◽  
Deformation Behavior ◽  
Elastoplastic Deformation ◽  
Accelerated Aging ◽  
Vibrational Loading ◽  
Average Deformation ◽  
Acoustic Softening ◽  
Β Relaxation

The influence of vibrational loading on the deformation behavior of a Zr50Cu46Al4 metallic glass (MG) was characterized via molecular dynamics approaches. High-frequency (1 GHz) vibrational loading was imposed on the elastoplastic deformation stage during the uniaxial tension of the MG conducted at 50 K. It was found that imposing vibrational loading scarcely reduces the average deformation resistance. On the contrary, it results in a notable residual hardening effect after the vibrational loading is removed, which differs significantly from the previously reported acoustic softening mechanisms. Vibrational loading can increase the fraction of STZed atoms and enhance the shear localization degree, which is beneficial to the shear deformation of MGs. Meanwhile, the influence of vibrational loading on the local microstructure of MG is negligible. A plausible explanation of these phenomena is given by considering the accelerated aging of MG stemming from the β relaxation.

Room temperature activated slow β relaxation and large compressive plasticity in a LaCe-based bulk metallic glass

2020 ◽  
Vol 122 ◽  
pp. 106793 ◽  
Author(s):  
Xiao Cui ◽  
Ji Chao Qiao ◽  
Jin Jing Li ◽  
Ling Zi Meng ◽  
Jing Guo ◽  
...  
Keyword(s):  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Room Temperature ◽  
Β Relaxation

Distinctive slow β relaxation and structural heterogeneity in (LaCe)-based metallic glass

2018 ◽  
Vol 742 ◽  
pp. 536-541 ◽  
Author(s):  
W. Zhai ◽  
C.H. Wang ◽  
J.C. Qiao ◽  
J.M. Pelletier ◽  
F.P. Dai ◽  
...  
Keyword(s):  
Metallic Glass ◽  
Structural Heterogeneity ◽  
Β Relaxation
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