scholarly journals Stability of Bulk Metallic Glass Structure. Final Report

2003 ◽  
Author(s):  
H. Jain ◽  
D. B. Williams
Keyword(s):  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Glass Structure ◽  
Final Report

Investigation of bulk metallic glass structure by means of electron irradiation

2009 ◽  
Vol 17 (4) ◽  
pp. 246-248 ◽  
Author(s):  
Yuri Petrusenko ◽  
Alexander Bakai ◽  
Valeriy Borysenko ◽  
Aleksandr Astakhov ◽  
Dmitro Barankov
Keyword(s):  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Electron Irradiation ◽  
Glass Structure

The Effect of Atomic-Scale Open-Volume on Flow and Fracture Processes in a Zr-Ti-Ni-Cu-Be Bulk Metallic Glass

2002 ◽  
Vol 754 ◽  
Author(s):  
Daewoong Suh ◽  
Reinhold H. Dauskardt
Keyword(s):  
Metallic Glass ◽  
Viscous Flow ◽  
Bulk Metallic Glass ◽  
Glass Structure ◽  
Fracture Morphology ◽  
Atomic Scale ◽  
Open Volume ◽  
Strain Fracture ◽  
Crack Growth Rates ◽  
Fracture Processes

ABSTRACTEffects of atomic-scale open-volume regions in metallic glass structure on the flow and fracture behavior of a Zr-Ti-Ni-Cu-Be bulk metallic glass were examined. Studies of relaxation time scales showed that atomic arrangement processes for viscous flow were significantly retarded with annealing. Plane strain fracture toughness was significantly decreased and fatigue crack crack-growth rates were dramatically increased, indicating degradation of resistance to crack extension as a result of annealing. Fracture morphology completely changed from vein patterns to cleavage-like features with little evidence of plasticity with annealing. The positron lifetime and Doppler broadening experiments revealed decreased open-volume regions as a result of annealing. The loss of stress relief ability by retarded crack tip viscous flow as a result of the anneal-out of open-volume regions is believed to contribute to observed annealing embrittlement.

Temperature dependence of positron annihilation in a Zr–Ti–Ni–Cu–Be bulk metallic glass

2003 ◽  
Vol 18 (9) ◽  
pp. 2021-2024 ◽  
Author(s):  
Daewoong Suh ◽  
Reinhold H. Dauskardt ◽  
P. Asoka-Kumar ◽  
Philip A. Sterne ◽  
Richard H. Howell
Keyword(s):  
Metallic Glass ◽  
Temperature Dependence ◽  
Positron Annihilation ◽  
Bulk Metallic Glass ◽  
Strong Correlation ◽  
Glass Structure ◽  
Strong Temperature Dependence ◽  
Flow Processes ◽  
Different Types ◽  
And Diffusion

A strong temperature dependence of positron annihilation with low-momentum electrons is reported for a Zr-based bulk metallic glass in the temperature range 50–300 K. The observed behavior was rationalized in terms of shallow versus deep positron traps. An interpretation of the data was presented based on the idea that there were two different types of open-volume regions: Bernal interstitial sites and thermally unstable larger holes. Bernal interstitial sites, intrinsic to the glass structure, were found to be insensitive to annealing. Alternatively, the larger holes were removed by annealing. The strong correlation between these larger holes and diffusion and viscous flow processes suggests that they may act as diffusion and flow defects.

Investigation of a Bulk Metallic Glass as a Shaped Charge Liner Material

2006 ◽  
Author(s):  
William P. Walters ◽  
Laszlo J. Kecskes ◽  
Justin E. Pritchett
Keyword(s):  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Shaped Charge ◽  
Liner Material

Strain, Stress and Stress Relaxation in Oxidized Zrcual-Based Bulk Metallic Glass

2020 ◽  
Author(s):  
Saber Haratian ◽  
Frank Niessen ◽  
Flemming B. Grumsen ◽  
Mitchell J. B. Nancarrow ◽  
Elena Pereloma ◽  
...  
Keyword(s):  
Stress Relaxation ◽  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Strain Stress

Deformation-strengthening during rolling Cu60Zr20Ti20 bulk metallic glass

2007 ◽  
Vol 457 (1-2) ◽  
pp. 94-99 ◽  
Author(s):  
Q.P. Cao ◽  
J.F. Li ◽  
Y. Hu ◽  
A. Horsewell ◽  
J.Z. Jiang ◽  
...  
Keyword(s):  
Metallic Glass ◽  
Bulk Metallic Glass
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