Flow units perspective on elastic recovery under sharp contact loading in metallic glasses

2016 ◽  
Vol 120 (21) ◽  
pp. 215104 ◽  
Author(s):  
K. Shahzad ◽  
A. Gulzar ◽  
W. H. Wang
Keyword(s):  
Metallic Glasses ◽  
Elastic Recovery ◽  
Contact Loading ◽  
Flow Units

Critical growth and energy barriers of atomic-scale plastic flow units in metallic glasses

2021 ◽  
Vol 202 ◽  
pp. 114033
Author(s):  
J.H. Yu ◽  
L.Q. Shen ◽  
D. Şopu ◽  
B.A. Sun ◽  
W.H. Wang
Keyword(s):  
Plastic Flow ◽  
Metallic Glasses ◽  
Critical Growth ◽  
Atomic Scale ◽  
Energy Barriers ◽  
Flow Units

scholarly journals Guiding shear bands in bulk metallic glasses using stress fields: A perspective from the activation of flow units

2020 ◽  
Vol 102 (13) ◽  
Author(s):  
K. Kosiba ◽  
S. Scudino ◽  
J. Bednarcik ◽  
J. Bian ◽  
G. Liu ◽  
...  
Keyword(s):  
Metallic Glasses ◽  
Shear Bands ◽  
Bulk Metallic Glasses ◽  
Stress Fields ◽  
Flow Units

Signature of viscous flow units in apparent elastic regime of metallic glasses

2012 ◽  
Vol 101 (12) ◽  
pp. 121906 ◽  
Author(s):  
Z. Wang ◽  
P. Wen ◽  
L. S. Huo ◽  
H. Y. Bai ◽  
W. H. Wang
Keyword(s):  
Viscous Flow ◽  
Metallic Glasses ◽  
Elastic Regime ◽  
Flow Units

Insight into the Deformation Mechanisms under a Sharp Contact Loading in Glass by Atomic Force Microscopy

2005 ◽  
Vol 904 ◽  
Author(s):  
Tanguy Rouxel ◽  
Satoshi Yoshida ◽  
Haixia Shang ◽  
Jean-Christophe Sangleboeuf
Keyword(s):  
Atomic Force Microscopy ◽  
Contact Area ◽  
Elastic Recovery ◽  
Residual Deformation ◽  
Constitutive Law ◽  
Indentation Creep ◽  
Contact Loading ◽  
Force Microscopy ◽  
Atomic Force ◽  
Insight Into

AbstractThe response of a material to a sharp contact loading, as in the case of Vickers indentation for instance, provides a unique insight into the material constitutive law, including elastic and irreversible deformation parameters as well. However, under such peculiar thermodynamical and mechanical conditions (the mean contact pressure on the contact area reaches values typically higher than 1 GPa, corresponding to the hardness of the material) the deformation processes are complex and the matter located just beneath and around the contact area may experience some structural changes and behave in a way different to the expected - or known - macroscopic behaviour. It is showed in this study by means of detailed topological investigations of the residual indentations by Atomic Force Microscopy (AFM) that the elastic recovery typically represents 50 to 70 % of the indentation volume at maximum load and that the densification contribution may reach 90 % of the residual deformation volume. Besides, most glasses exhibit indentation-creep phenomena, which become significant over time scale of few minutes because of a pronounced shear-thinning behavior..

The role of time in activation of flow units in metallic glasses

2015 ◽  
Vol 67 ◽  
pp. 47-51 ◽  
Author(s):  
T.P. Ge ◽  
X.Q. Gao ◽  
B. Huang ◽  
W.H. Wang ◽  
H.Y. Bai
Keyword(s):  
Metallic Glasses ◽  
Flow Units

Correlation between flow units and crystallization in metallic glasses

2017 ◽  
Vol 461 ◽  
pp. 61-66 ◽  
Author(s):  
A. Gulzar ◽  
L.Z. Zhao ◽  
R.J. Xue ◽  
K. Shahzad ◽  
D.Q. Zhao ◽  
...  
Keyword(s):  
Metallic Glasses ◽  
Flow Units

Evaluation of flow units and free volumes in metallic glasses

2014 ◽  
Vol 116 (10) ◽  
pp. 103516 ◽  
Author(s):  
L. Z. Zhao ◽  
R. J. Xue ◽  
Z. G. Zhu ◽  
Z. Lu ◽  
E. Axinte ◽  
...  
Keyword(s):  
Metallic Glasses ◽  
Flow Units

The activation energy and volume of flow units of metallic glasses

2012 ◽  
Vol 67 (1) ◽  
pp. 9-12 ◽  
Author(s):  
S.T. Liu ◽  
Z. Wang ◽  
H.L. Peng ◽  
H.B. Yu ◽  
W.H. Wang
Keyword(s):  
Activation Energy ◽  
Metallic Glasses ◽  
Flow Units
Sign in / Sign up

Export Citation Format

Share Document