scholarly journals Revealing the Low-Temperature Fast Relaxation Peak in a Model Metallic Glass

2020 ◽  
Author(s):  
B. Wang ◽  
L. J. Wang ◽  
B. S. Shang ◽  
X. Q. Gao ◽  
Yong Yang ◽  
...  
Keyword(s):  
Low Temperature ◽  
Metallic Glass ◽  
Relaxation Peak ◽  
Fast Relaxation

Revealing the ultra-low-temperature relaxation peak in a model metallic glass

2020 ◽  
Vol 195 ◽  
pp. 611-620 ◽  
Author(s):  
B. Wang ◽  
L.J. Wang ◽  
B.S. Shang ◽  
X.Q. Gao ◽  
Y. Yang ◽  
...  
Keyword(s):  
Low Temperature ◽  
Metallic Glass ◽  
Relaxation Peak ◽  
Temperature Relaxation

scholarly journals A Study on the Low Temperature Internal Friction Relaxation Peak in a Ti49.8Ni50.2 Alloy

2006 ◽  
Vol 47 (3) ◽  
pp. 711-715 ◽  
Author(s):  
Shyi-Kaan Wu ◽  
Hsin-Chih Lin ◽  
Tung-Sheng Chou
Keyword(s):  
Low Temperature ◽  
Internal Friction ◽  
Relaxation Peak

Search for High Damping Metallic Glasses

2006 ◽  
Vol 319 ◽  
pp. 151-156 ◽  
Author(s):  
Y. Hiki ◽  
M. Tanahashi ◽  
Shin Takeuchi
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Internal Friction ◽  
Metallic Glass ◽  
Room Temperature ◽  
Temperature Stability ◽  
Temperature Peak ◽  
High Temperature Side ◽  
Side Slope ◽  
Temperature Side

In a hydrogen-doped metallic glass, there appear low-temperature and high-temperature internal friction peaks respectively associated with a point-defect relaxation and the crystallization. The high-temperature-side slope of low-temperature peak and also the low-temperature-side slope of high-temperature peak enhance the background internal friction near the room temperature. A hydrogen-doped Mg-base metallic glass was proposed as a high-damping material to be used near and somewhat above the room temperature. Stability of the high damping was also checked.

Structure Instability of Metallic Glass Zr50Cu40Al10 in Low Temperature

2007 ◽  
pp. 2100-2105
Author(s):  
Takeshi Fukami ◽  
A. Nanbu ◽  
M. Fukatani ◽  
D. Okai ◽  
Y. Akeno ◽  
...  
Keyword(s):  
Low Temperature ◽  
Metallic Glass

A New Low-Temperature Dislocation-Relaxation Peak in Aluminum

1989 ◽  
Vol 58 (12) ◽  
pp. 4269-4272 ◽  
Author(s):  
Toshio Kosugi ◽  
Takao Kino
Keyword(s):  
Low Temperature ◽  
Relaxation Peak

Compressive Plasticity of Zr-Based Bulk Metallic Glass at Low Temperature

2012 ◽  
Vol 443-444 ◽  
pp. 583-586
Author(s):  
Ya Juan Sun ◽  
Ri Ga Wu ◽  
Hong Jing Wang
Keyword(s):  
Mechanical Properties ◽  
Low Temperature ◽  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Low Temperatures ◽  
Room Temperature ◽  
Shear Bands ◽  
Strain Curve ◽  
Testing Temperature ◽  
Stress Strain Curve

The mechanical properties of a new Zr-based bulk metallic glass at low temperatures were investigated. The results indicate that the fracture strength increases significantly (4.9%) and the global plasticity increases somewhat when testing temperature is lowered to 123K. The stress-strain curve of the sample deformed exhibits more serrations and smaller stress drop due to formation of more shear bands at low temperature than at room temperature.

Decreasing activation energy of fast relaxation processes in a metallic glass during aging

2019 ◽  
Vol 99 (14) ◽  
Author(s):  
Martin Luckabauer ◽  
Tomoki Hayashi ◽  
Hidemi Kato ◽  
Tetsu Ichitsubo
Keyword(s):  
Activation Energy ◽  
Metallic Glass ◽  
Relaxation Processes ◽  
Fast Relaxation

scholarly journals Low Temperature Elastic Properties of CuZrTi Bulk Metallic Glass

2007 ◽  
Vol 48 (7) ◽  
pp. 1842-1845 ◽  
Author(s):  
R. Tarumi ◽  
M. Hirao ◽  
T. Ichitsubo ◽  
E. Matsubara ◽  
J. Saida ◽  
...  
Keyword(s):  
Low Temperature ◽  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Elastic Properties

Correlation between Fracture Mechanical and Atom Probe Investigations on Metallic Glass Ribbon

1985 ◽  
Vol 58 ◽  
Author(s):  
M. Calvo ◽  
A. Menand ◽  
F. Osterstock ◽  
J.L. Chermant
Keyword(s):  
Low Temperature ◽  
Metallic Glass ◽  
Metallic Glasses ◽  
Glass Ribbon ◽  
Atom Probe ◽  
Mechanical Measurements ◽  
Critical Defect ◽  
Metallic Glass Ribbon

ABSTRACTMetallic glasses have good mechanical and magnetical properties. However they embrittle after annealing and/or low temperature testing. In this paper, we describe the rupture of atom probe tips using fracture mechanical measurements. We found boron rich areas which seem to be interconnected and more numerous after annealing and act as crack nuclei. The good correlation between the calculated and the measured size of the critical defect seem to confirm that the boron segregations are on the origin of embrittlement and gives good ground for further straightforward investigations.

Structure Instability of Metallic Glass Zr50Cu40Al10 in Low Temperature

2007 ◽  
Vol 539-543 ◽  
pp. 2100-2105
Author(s):  
Takeshi Fukami ◽  
A. Nanbu ◽  
M. Fukatani ◽  
Daisuke Okai ◽  
Y. Akeno ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Electrical Resistivity ◽  
Wave Propagation ◽  
Low Temperature ◽  
Metallic Glass ◽  
Room Temperature ◽  
Sound Propagation ◽  
Abrupt Increase ◽  
Mechanical Resonance ◽  
Abrupt Decrease

In order to examine mechanical properties of a metallic glass Zr50Cu40Al10 in low temperature below room temperature, the temperature T dependence of mechanical resonance of ultrasonic wave are measured. The mechanical resonance frequency in an as-quenched sample shows an abrupt increase at 200K for longitudinal wave and 160 K for transverse wave with decreasing T. After this abrupt increase, the sound propagation cannot be detected below these temperatures but the wave propagation is restored with increasing T and there is an abrupt decrease at 260K for the both wave modes. The similar hysteresis is observed in temperature dependence of the electrical resistivity. These suggest a kind of structure instability of Zr50Cu40Al10 in low temperature region.

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