Hydrogen-doped Bulk Metallic Glasses as High Damping Material

2000 ◽  
Vol 644 ◽  
Author(s):  
Teruaki Yagi ◽  
Rikiya Oguro ◽  
Ryuji Tamura ◽  
Shin Takeuchi
Keyword(s):  
Internal Friction ◽  
Metallic Glasses ◽  
Bulk Metallic Glasses ◽  
High Strength ◽  
High Ductility ◽  
Hydrogen Atoms ◽  
High Affinity ◽  
Damping Material ◽  
Friction Measurements ◽  
Peak Value

AbstractBulk metallic glasses have extremely high strength and high ductility and are quite useful as the structural material. Many of bulk metallic glasses are based on Zr, Ti and Pd; these elements have a high affinity with hydrogen and hence the bulk metallic glasses can contain a large amount of hydrogen atoms. It is known that hydrogenized amorphous metals, as well as hydrogenized metallic crystals, exhibit Snoek-type relaxation, and hence metallic glasses containing a high density of hydrogen can have a high internal friction.In the present experiments, internal friction measurements have been performed for bulk metallic glasses doped with a variety of hydrogen concentrations. It is shown that the peak value of the internal friction reaches the order of 10-2 in Zr-based bulk metallic glasses which have the fracture strength as high as 1.5 GPa. Thus, hydrogen-doped bulk metallic glasses can be used as the high-strength, high-damping material.

scholarly journals On Glass Forming Ability of Bulk Metallic Glasses by Relating the Internal Friction Peak Value

Metals ◽  
2020 ◽  
Vol 10 (6) ◽  
pp. 767
Author(s):  
Xianfeng Zhang ◽  
Xiao Cui ◽  
Zhuotong Du ◽  
Fangqiu Zu ◽  
Jinjing Li ◽  
...  
Keyword(s):  
Internal Friction ◽  
Metallic Glasses ◽  
Bulk Metallic Glasses ◽  
Glass Forming Ability ◽  
Liquid Region ◽  
Internal Friction Peak ◽  
Glass Forming ◽  
Constituent Elements ◽  
Valid Criterion ◽  
Peak Value

The internal friction (IF) behaviors of a series of LaCe-, Zr-, and La-based bulk metallic glasses (BMGs) were studied by a computer-controlled, conventional inverted torsion pendulum. The results indicate that with an increasing temperature, the IF also increases gradually in the supercooled liquid region, followed by a decrease caused by crystallization. BMGs with a good glass forming ability (GFA) usually possess a high IF peak value for an alloy system with the same constituent elements. Furthermore, the magnitude of the IF value (Qi−1) of the inflection point is an efficient criterion of GFA. The Qi−1 value is a valid criterion under the conditions of identical constituent elements and different element contents. However, Qi−1 and GFA have no relationship among different alloy systems.

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

Core-shell Mg66Zn30Ca4 bulk metallic glasses composites reinforced by Fe with high strength and controllable degradation

2021 ◽  
Vol 138 ◽  
pp. 107334 ◽  
Author(s):  
Kun Li ◽  
Zeyun Cai ◽  
Peng Du ◽  
Tao Xiang ◽  
Xinxin Yang ◽  
...  
Keyword(s):  
Metallic Glasses ◽  
Bulk Metallic Glasses ◽  
High Strength ◽  
Core Shell ◽  
Controllable Degradation

Fe-based bulk metallic glasses with a larger supercooled liquid region and high ductility

2008 ◽  
Vol 498 (1-2) ◽  
pp. 464-467 ◽  
Author(s):  
K.Q. Qiu ◽  
J. Pang ◽  
Y.L. Ren ◽  
H.B. Zhang ◽  
C.L. Ma ◽  
...  
Keyword(s):  
Metallic Glasses ◽  
Bulk Metallic Glasses ◽  
Supercooled Liquid ◽  
Supercooled Liquid Region ◽  
Liquid Region ◽  
High Ductility

Internal friction and elastic modulus of bulk metallic glasses

2004 ◽  
Vol 370 (1-2) ◽  
pp. 302-306 ◽  
Author(s):  
Y. Hiki ◽  
T. Yagi ◽  
T. Aida ◽  
S. Takeuchi
Keyword(s):  
Elastic Modulus ◽  
Internal Friction ◽  
Metallic Glasses ◽  
Bulk Metallic Glasses

Low-Density High-Strength Bulk Metallic Glasses and Their Composites: A Review

2014 ◽  
Vol 17 (6) ◽  
pp. 761-780 ◽  
Author(s):  
Jian-Zhong Jiang ◽  
Douglas Hofmann ◽  
David John Jarvis ◽  
Hans-J. Fecht
Keyword(s):  
Metallic Glasses ◽  
Bulk Metallic Glasses ◽  
High Strength ◽  
Low Density

scholarly journals Fe-B-Si-Nb Bulk Metallic Glasses with High Strength above 4000 MPa and Distinct Plastic Elongation

2004 ◽  
Vol 45 (4) ◽  
pp. 1214-1218 ◽  
Author(s):  
Kenji Amiya ◽  
Akiri Urata ◽  
Nobuyuki Nishiyama ◽  
Akihisa Inoue
Keyword(s):  
Metallic Glasses ◽  
Bulk Metallic Glasses ◽  
High Strength ◽  
Plastic Elongation

Internal Friction of Hydrogenated Ti (Ni,Cu) Shape Memory Alloys

2006 ◽  
Vol 319 ◽  
pp. 39-44 ◽  
Author(s):  
T. Ueura ◽  
Takuya Sakaguchi ◽  
N. Igata ◽  
Shin Takeuchi
Keyword(s):  
Internal Friction ◽  
Shape Memory Alloys ◽  
Shape Memory ◽  
Oscillation Mode ◽  
Peak Temperature ◽  
Hydrogen Atoms ◽  
Exponential Factor ◽  
Cu Alloy ◽  
Hydrogen Doping ◽  
Peak Value

Effects of hydrogen doping on the internal friction (IF) of ternary Ti50Ni50-xCux (x=15, 20, 25) shape memory alloys, prepared by rolling and annealing laminating Ti and Ni-Cu alloy sheets, have been measured with a damping mechanical analyzer in a forced bending oscillation mode at temperatures from 173K to 423K at three frequencies, 0.1, 1 and 5Hz. The effects of hydrogen doping on IF are common to the three alloys: a hydrogen IF peak appears at around 260K; the IF peak value (tanφ) increases rapidly with increasing hydrogen concentration up to tanφ=0.03 at 0.5at% and then decreases; the peak temperature also increases rapidly and then gradually decreases. From the frequency dependence of the peak temperature, the activation energy E and the pre-exponential factor ω0 have been analyzed to be E=0.6-0.7eV and ω0=1013-14s-1. The origin of the hydrogen IF is interpreted to be the Snoek-Koester effect due to interaction of twin boundary dislocations and segregated hydrogen atoms. Effects of hydrogen on mechanical properties of the alloys have also been studied.

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