Dynamic Fracture Morphology of Bulk Metallic Glass Subjected to Shock Compression

2015 ◽  
pp. 757-762
Author(s):  
Gauri Khanolkar ◽  
Shima Haghighat ◽  
Andrea M. Hodge ◽  
Katherine M. Flores ◽  
Veronica Eliasson
Keyword(s):  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Dynamic Fracture ◽  
Shock Compression ◽  
Fracture Morphology

scholarly journals Effect of Loading Rate on Dynamic Fracture Morphology of a Zr-Based Bulk Metallic Glass

2015 ◽  
Vol 56 (6) ◽  
pp. 840-843 ◽  
Author(s):  
Gauri R Khanolkar ◽  
Shima Haghighat ◽  
Andrea M Hodge ◽  
Katharine M Flores ◽  
Veronica Eliasson
Keyword(s):  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Dynamic Fracture ◽  
Loading Rate ◽  
Fracture Morphology

scholarly journals Dynamic fracture instability of tough bulk metallic glass

2008 ◽  
Vol 92 (17) ◽  
pp. 171909 ◽  
Author(s):  
J. X. Meng ◽  
Z. Ling ◽  
M. Q. Jiang ◽  
H. S. Zhang ◽  
L. H. Dai
Keyword(s):  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Dynamic Fracture ◽  
Fracture Instability

Shock compression response of a Zr-based bulk metallic glass up to 110 GPa

2010 ◽  
Vol 108 (8) ◽  
pp. 083537 ◽  
Author(s):  
Feng Xi ◽  
Yuying Yu ◽  
Chengda Dai ◽  
Yi Zhang ◽  
Lingcang Cai
Keyword(s):  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Shock Compression

Dynamic Fracture of a Zr-based Bulk Metallic Glass

2013 ◽  
Vol 44 (10) ◽  
pp. 4644-4653 ◽  
Author(s):  
George Sunny ◽  
Vikas Prakash ◽  
John J. Lewandowski
Keyword(s):  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Dynamic Fracture

scholarly journals Ductile to brittle transition in dynamic fracture of brittle bulk metallic glass

2008 ◽  
Vol 103 (9) ◽  
pp. 093520 ◽  
Author(s):  
G. Wang ◽  
Y. N. Han ◽  
X. H. Xu ◽  
F. J. Ke ◽  
B. S. Han ◽  
...  
Keyword(s):  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Dynamic Fracture ◽  
Brittle Transition ◽  
Ductile To Brittle Transition

Periodic corrugation on dynamic fracture surface in brittle bulk metallic glass

2006 ◽  
Vol 89 (18) ◽  
pp. 181911 ◽  
Author(s):  
X. K. Xi ◽  
D. Q. Zhao ◽  
M. X. Pan ◽  
W. H. Wang ◽  
Y. Wu ◽  
...  
Keyword(s):  
Fracture Surface ◽  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Dynamic Fracture

Properties of Zr-based bulk metallic glass under shock compression

2007 ◽  
Vol 449-451 ◽  
pp. 264-268 ◽  
Author(s):  
H. Togo ◽  
Y. Zhang ◽  
Y. Kawamura ◽  
T. Mashimo
Keyword(s):  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Shock Compression

Tension and stress relaxation behavior of a La-based bulk metallic glass

2007 ◽  
Vol 22 (12) ◽  
pp. 3303-3308 ◽  
Author(s):  
G.Q. Zhang ◽  
Q.K. Jiang ◽  
X.P. Nie ◽  
L.Y. Chen ◽  
L.N. Wang ◽  
...  
Keyword(s):  
Glass Transition ◽  
Stress Relaxation ◽  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Free Volume ◽  
Annealing Time ◽  
Fracture Morphology ◽  
Cast Sample ◽  
Brittle Behavior ◽  
Tension Tests

Tension and stress-relaxation behaviors of a La62Al14Cu11.7Ag2.3Ni5Co5 bulk metallic glass (BMG) as a function of isothermal annealing time have been investigated. It is found that annealing at 373 K below the glass-transition temperature (423 K) of the BMG alloy causes an increase of special heat difference at the glass transition and density of the alloy, indicating a reduction of free volume in the BMG alloy with annealing time. Compared with the as-cast sample, the fracture strength, Vickers hardness, viscosity, Young’s modulus, and stress-relaxation stability of the annealed BMGs increase with annealing time, which is caused by the reduction of free volume in the annealed samples. Furthermore, a change of fracture morphology from a mixture of smooth and furrow zones in the as-cast sample to a mainly furrow zone in the sample annealed for 8 h was also observed. All samples exhibit brittle behavior during tension tests.

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.

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