The role of time in activation of flow units in metallic glasses

2015 ◽  
Vol 67 ◽  
pp. 47-51 ◽  
Author(s):  
T.P. Ge ◽  
X.Q. Gao ◽  
B. Huang ◽  
W.H. Wang ◽  
H.Y. Bai
Keyword(s):  
Metallic Glasses ◽  
Flow Units

Critical growth and energy barriers of atomic-scale plastic flow units in metallic glasses

2021 ◽  
Vol 202 ◽  
pp. 114033
Author(s):  
J.H. Yu ◽  
L.Q. Shen ◽  
D. Şopu ◽  
B.A. Sun ◽  
W.H. Wang
Keyword(s):  
Plastic Flow ◽  
Metallic Glasses ◽  
Critical Growth ◽  
Atomic Scale ◽  
Energy Barriers ◽  
Flow Units

scholarly journals Role of Nanocrystallites of Al-Based Glasses and H2O2 in Degradation Azo Dyes

Materials ◽  
2020 ◽  
Vol 14 (1) ◽  
pp. 39
Author(s):  
Qi Chen ◽  
Zhicheng Yan ◽  
Hao Zhang ◽  
KiBuem Kim ◽  
Weimin Wang
Keyword(s):  
Metallic Glasses ◽  
Azo Dye ◽  
Amorphous Matrix ◽  
Nano Scale ◽  
Transmission Electron ◽  
Melt Spun ◽  
Degradation Ability ◽  
Tem Transmission Electron Microscopy ◽  
Dye Solutions

Al-based metallic glasses have a special atomic structure and should have a unique degradation ability in azo dye solutions. The Al88Ni9Y3 (Y3), Al85Ni9Y6 (Y6) and Al82Ni9Y9 (Y9) glassy ribbons are melt spun and used in degrading methyl orange (MO) azo dye solution with adding H2O2. With increasing cY, the as-spun ribbons have an increasing GFA (glass formability) and gradually decreased the degradation rate of MO solution. TEM (transmission electron microscopy) results show that the Y3 ribbon has nano-scale crystallites, which may form the channels to transport elements to the surface for degrading the MO solution. After adding H2O2, the degradation efficiency of Al-based glasses is improved and the Y6 ribbon has formed nano-scale crystallites embedded in the amorphous matrix and it has the largest improvement in MO solution degradation. These results indicate that forming nano-scale crystallites and adding H2O2 are effective methods to improve the degradation ability of Al-based glasses in azo dye solutions.

scholarly journals Guiding shear bands in bulk metallic glasses using stress fields: A perspective from the activation of flow units

2020 ◽  
Vol 102 (13) ◽  
Author(s):  
K. Kosiba ◽  
S. Scudino ◽  
J. Bednarcik ◽  
J. Bian ◽  
G. Liu ◽  
...  
Keyword(s):  
Metallic Glasses ◽  
Shear Bands ◽  
Bulk Metallic Glasses ◽  
Stress Fields ◽  
Flow Units

Role of yttrium in glass formation of Fe-based bulk metallic glasses

2003 ◽  
Vol 83 (13) ◽  
pp. 2581-2583 ◽  
Author(s):  
Z. P. Lu ◽  
C. T. Liu ◽  
W. D. Porter
Keyword(s):  
Metallic Glasses ◽  
Glass Formation ◽  
Bulk Metallic Glasses

A survey of instrumented indentation studies on metallic glasses

2004 ◽  
Vol 19 (1) ◽  
pp. 46-57 ◽  
Author(s):  
C.A. Schuh ◽  
T.G. Nieh
Keyword(s):  
Metallic Glasses ◽  
Structural Changes ◽  
Shear Banding ◽  
Depth Sensing ◽  
Future Directions ◽  
Fundamental Physics ◽  
New Approach ◽  
The Past ◽  
Rate Dependent

The development of instrumented nanoindentation equipment has occurred concurrently with the discovery of many new families of bulk metallic glass during the past decade. While indentation testing has long been used to assess the mechanical properties of metallic glasses, depth-sensing capabilities offer a new approach to study the fundamental physics behind glass deformation. This article is a succinct review of the research to date on the indentation of metallic glasses. In addition to standard hardness measurements, the onset of plasticity in metallic glasses is reviewed as well as the role of shear banding in indentation, structural changes beneath the indenter, and rate-dependent effects measured by nanoindentation. The article concludes with perspectives about the future directions for nanocontact studies on metallic glasses.

scholarly journals Probing the role of Johari–Goldstein relaxation in the plasticity of metallic glasses

2019 ◽  
Vol 7 (9) ◽  
pp. 383-391
Author(s):  
M. Zhang ◽  
Y. Chen ◽  
R. G. He ◽  
S. F. Guo ◽  
J. Ma ◽  
...  
Keyword(s):  
Metallic Glasses

Role of nanometer-scale quasicrystals in improving the mechanical behavior of Ti-based bulk metallic glasses

2003 ◽  
Vol 83 (15) ◽  
pp. 3093-3095 ◽  
Author(s):  
Yu Chan Kim ◽  
Jong Hyun Na ◽  
Jin Man Park ◽  
Do Hyang Kim ◽  
Jin Kyu Lee ◽  
...  
Keyword(s):  
Mechanical Behavior ◽  
Metallic Glasses ◽  
Bulk Metallic Glasses ◽  
Nanometer Scale

Signature of viscous flow units in apparent elastic regime of metallic glasses

2012 ◽  
Vol 101 (12) ◽  
pp. 121906 ◽  
Author(s):  
Z. Wang ◽  
P. Wen ◽  
L. S. Huo ◽  
H. Y. Bai ◽  
W. H. Wang
Keyword(s):  
Viscous Flow ◽  
Metallic Glasses ◽  
Elastic Regime ◽  
Flow Units
Sign in / Sign up

Export Citation Format

Share Document