Size-dependent failure mechanisms in ZrNi thin metallic glass films

2014 ◽  
Vol 89 ◽  
pp. 9-12 ◽  
Author(s):  
Matteo Ghidelli ◽  
Sébastien Gravier ◽  
Jean-Jacques Blandin ◽  
Jean-Pierre Raskin ◽  
Frédéric Lani ◽  
...  
Keyword(s):  
Metallic Glass ◽  
Failure Mechanisms ◽  
Size Dependent ◽  
Dependent Failure ◽  
Glass Films

Homogeneous flow and size dependent mechanical behavior in highly ductile Zr65Ni35 metallic glass films

2017 ◽  
Vol 131 ◽  
pp. 246-259 ◽  
Author(s):  
Matteo Ghidelli ◽  
Hosni Idrissi ◽  
Sébastien Gravier ◽  
Jean-Jacques Blandin ◽  
Jean-Pierre Raskin ◽  
...  
Keyword(s):  
Metallic Glass ◽  
Mechanical Behavior ◽  
Homogeneous Flow ◽  
Size Dependent ◽  
Glass Films

Size-Dependent Failure of the Strongest Bulk Metallic Glass

2019 ◽  
Author(s):  
Ruitao Qu ◽  
Dominik Tönnies ◽  
Lin Tian ◽  
Zengqian Liu ◽  
Zhefeng Zhang ◽  
...  
Keyword(s):  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Size Dependent ◽  
Dependent Failure

Advanced TEM study of homogeneous flow and size dependent mechanical behaviour in highly ductile Zr65Ni35 metallic glass films

2016 ◽  
pp. 730-731
Author(s):  
Hosni Idrissi ◽  
Matteo Ghidelli ◽  
Sébastien Gravier ◽  
Jean-Jacques Blandin ◽  
Jean-Pierre Raskin ◽  
...  
Keyword(s):  
Metallic Glass ◽  
Mechanical Behaviour ◽  
Homogeneous Flow ◽  
Size Dependent ◽  
Glass Films

Size-dependent failure of the strongest bulk metallic glass

2019 ◽  
Vol 178 ◽  
pp. 249-262 ◽  
Author(s):  
Ruitao Qu ◽  
Dominik Tönnies ◽  
Lin Tian ◽  
Zengqian Liu ◽  
Zhefeng Zhang ◽  
...  
Keyword(s):  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Size Dependent ◽  
Dependent Failure

Size-dependent plastic stability of Zr-based metallic glass

2015 ◽  
Vol 646 ◽  
pp. 272-278 ◽  
Author(s):  
F.F. Wu ◽  
S. S Jiang ◽  
R.D. Zhao ◽  
Q. Zhou ◽  
G.A. Zhang ◽  
...  
Keyword(s):  
Metallic Glass ◽  
Size Dependent ◽  
Plastic Stability

scholarly journals Atomic-scale viscoplasticity mechanisms revealed in high ductility metallic glass films

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Hosni Idrissi ◽  
Matteo Ghidelli ◽  
Armand Béché ◽  
Stuart Turner ◽  
Sébastien Gravier ◽  
...  
Keyword(s):  
Metallic Glass ◽  
Metallic Glasses ◽  
Shear Banding ◽  
Atomic Scale ◽  
Microscopy Imaging ◽  
Rate Dependent ◽  
Imaging And Spectroscopy ◽  
Shear Transformation Zones ◽  
The Impact ◽  
Glass Films

Abstract The fundamental plasticity mechanisms in thin freestanding Zr65Ni35 metallic glass films are investigated in order to unravel the origin of an outstanding strength/ductility balance. The deformation process is homogenous until fracture with no evidence of catastrophic shear banding. The creep/relaxation behaviour of the films was characterized by on-chip tensile testing, revealing an activation volume in the range 100–200 Å3. Advanced high-resolution transmission electron microscopy imaging and spectroscopy exhibit a very fine glassy nanostructure with well-defined dense Ni-rich clusters embedded in Zr-rich clusters of lower atomic density and a ~2–3 nm characteristic length scale. Nanobeam electron diffraction analysis reveals that the accumulation of plastic deformation at room-temperature correlates with monotonously increasing disruption of the local atomic order. These results provide experimental evidences of the dynamics of shear transformation zones activation in metallic glasses. The impact of the nanoscale structural heterogeneities on the mechanical properties including the rate dependent behaviour is discussed, shedding new light on the governing plasticity mechanisms in metallic glasses with initially heterogeneous atomic arrangement.

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