Time-Dependent Nucleation in Partitioning Systems

1997 ◽  
Vol 481 ◽  
Author(s):  
K. F. Kelton ◽  
K. Lakshmi Narayan
Keyword(s):  
Long Range ◽  
Metallic Glasses ◽  
Bulk Metallic Glasses ◽  
Time Dependent ◽  
New Model ◽  
Component Systems

ABSTRACTNucleation in multi-component systems is poorly understood, particularly when the rates of long-range diffusion are comparable with the rates of attachment at the cluster interface. For illustration, measurements of the time-dependent nucleation rates in silicate and metallic glasses are discussed. A new model for nucleation in partitioning systems, which explains many of devitrification microstructural features in bulk metallic glasses, is presented.

New model of Gibbs free energy difference for bulk metallic glasses

2006 ◽  
Vol 435-436 ◽  
pp. 478-483 ◽  
Author(s):  
An-Hui Cai ◽  
Hui Wang ◽  
Xiao-Song Li ◽  
Hua Chen ◽  
Yong Zhou ◽  
...  
Keyword(s):  
Free Energy ◽  
Gibbs Free Energy ◽  
Metallic Glasses ◽  
Bulk Metallic Glasses ◽  
Energy Difference ◽  
Free Energy Difference ◽  
New Model ◽  
Gibbs Free Energy Difference

scholarly journals The characterization of creep and time-dependent properties of bulk metallic glasses using nanoindentation

2008 ◽  
Vol 478 (1-2) ◽  
pp. 371-375 ◽  
Author(s):  
W.H. Li ◽  
Keesam Shin ◽  
C.G. Lee ◽  
B.C. Wei ◽  
T.H. Zhang ◽  
...  
Keyword(s):  
Metallic Glasses ◽  
Bulk Metallic Glasses ◽  
Time Dependent

High-strength Cu–Ti-rich bulk metallic glasses and nano-composites

2003 ◽  
Vol 94 (5) ◽  
pp. 615-620 ◽  
Author(s):  
Mariana Calin ◽  
Jürgen Eckert ◽  
Ludwig Schultz
Keyword(s):  
Metallic Glasses ◽  
Bulk Metallic Glasses ◽  
High Strength ◽  
Nano Composites

scholarly journals Tension-Tension Fatigue Behavior of High-Toughness Zr61Ti2Cu25Al12 Bulk Metallic Glass

Materials ◽  
2021 ◽  
Vol 14 (11) ◽  
pp. 2815
Author(s):  
Yu Hang Yang ◽  
Jun Yi ◽  
Na Yang ◽  
Wen Liang ◽  
Hao Ran Huang ◽  
...  
Keyword(s):  
Fracture Toughness ◽  
Shear Band ◽  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Fatigue Resistance ◽  
Metallic Glasses ◽  
Stress Amplitude ◽  
Fatigue Behavior ◽  
Bulk Metallic Glasses ◽  
High Toughness

Bulk metallic glasses have application potential in engineering structures due to their exceptional strength and fracture toughness. Their fatigue resistance is very important for the application as well. We report the tension-tension fatigue damage behavior of a Zr61Ti2Cu25Al12 bulk metallic glass, which has the highest fracture toughness among BMGs. The Zr61Ti2Cu25Al12 glass exhibits a tension-tension fatigue endurance limit of 195 MPa, which is higher than that of high-toughness steels. The fracture morphology of the specimens depends on the applied stress amplitude. We found flocks of shear bands, which were perpendicular to the loading direction, on the surface of the fatigue test specimens with stress amplitude higher than the fatigue limit of the glass. The fatigue cracking of the glass initiated from a shear band in a shear band flock. Our work demonstrated that the Zr61Ti2Cu25Al12 glass is a competitive structural material and shed light on improving the fatigue resistance of bulk metallic glasses.

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