Atomic-level deformation of CuxZr100-x metallic glasses under shock loading

2018 ◽  
Vol 123 (21) ◽  
pp. 215101 ◽  
Author(s):  
Brian J. Demaske ◽  
Simon R. Phillpot ◽  
Douglas E. Spearot
Keyword(s):  
Metallic Glasses ◽  
Shock Loading ◽  
Atomic Level

Atomic-Level Processes of Shear Band Nucleation in Metallic Glasses

2017 ◽  
Vol 119 (19) ◽  
Author(s):  
D. Şopu ◽  
A. Stukowski ◽  
M. Stoica ◽  
S. Scudino
Keyword(s):  
Shear Band ◽  
Metallic Glasses ◽  
Atomic Level

The nature of the atomic-level structure in the Cu–Zr binary metallic glasses

2012 ◽  
Vol 26 ◽  
pp. 8-10 ◽  
Author(s):  
Z.D. Sha ◽  
H. Pan ◽  
Q.X. Pei ◽  
Y.W. Zhang
Keyword(s):  
Metallic Glasses ◽  
Level Structure ◽  
Atomic Level ◽  
Binary Metallic Glasses

DEFORMATION BEHAVIORS OF Zr-BASED BULK METALLIC GLASS UNDER IMPACT INDENTATION

2008 ◽  
Vol 22 (09n11) ◽  
pp. 1775-1782 ◽  
Author(s):  
HYUNG-SEOP SHIN ◽  
SOON-NAM CHANG ◽  
DO KYUNG KIM
Keyword(s):  
Metallic Glasses ◽  
Impact Loading ◽  
Shock Loading ◽  
Shear Bands ◽  
Amorphous Metal ◽  
High Yield ◽  
Spherical Indentation ◽  
Loading Conditions ◽  
Structural Applications ◽  
Deformation Behaviors

Metallic glasses are amorphous meta-stable solids and are now being processed in bulk form suitable for structural applications under impact loading. Bulk metallic glasses have many unique mechanical properties such as high yield strength and fracture toughness, good corrosion and wear resistance that distinguish them from crystalline metals and alloys. However, only a few studies could be found mentioning the dynamic response and damage of metallic glasses under impact or shock loading. In this study, we employed a small explosive detonator for the dynamic indentation to a Zr -based bulk amorphous metal in order to evaluate the damage behavior of bulk amorphous metal under impact or shock loading conditions. Results were compared with those of spherical indentation under quasi-static and impact loading and were discussed. The interface bonded specimen method was adopted in order to observe the subsurface damage, especially the formation of shear bands induced during indentation under different loading conditions.

The fractal correlation between relaxation dynamics and atomic-level structures observed in metallic glasses by computer simulation

2017 ◽  
Vol 19 (25) ◽  
pp. 16850-16856 ◽  
Author(s):  
M. H. Yang ◽  
J. H. Li ◽  
B. X. Liu
Keyword(s):  
Computer Simulation ◽  
Hierarchical Clustering ◽  
Metallic Glasses ◽  
Clustering Analysis ◽  
Atomic Level ◽  
Hierarchical Clustering Analysis ◽  
Relaxation Dynamics

Hierarchical clustering analysis shows that the activating atoms are excited in a cooperative and avalanche-like model to form activating units. Interestingly, a fractal correlation is found between the number and size of the activating units.

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