Correlation between relaxations and plastic deformation, and elastic model of flow in metallic glasses and glass-forming liquids

2011 ◽  
Vol 110 (5) ◽  
pp. 053521 ◽  
Keyword(s):  
Plastic Deformation ◽  
Metallic Glasses ◽  
Elastic Model ◽  
Glass Forming

scholarly journals Discontinuities of Plastic Deformation in Metallic Glasses with Different Glass Forming Ability

2015 ◽  
Vol 75 ◽  
pp. 1265-1270 ◽  
Author(s):  
Maria Hurakova ◽  
Kornel Csach ◽  
Jozef Miskuf ◽  
Alena Jurikova ◽  
Stefan Demcak ◽  
...  
Keyword(s):  
Plastic Deformation ◽  
Metallic Glasses ◽  
Glass Forming Ability ◽  
Glass Forming

Serrated Plastic Flow of Various Metallic Glasses during Nanoindentation

2016 ◽  
Vol 368 ◽  
pp. 3-6
Author(s):  
Mária Huráková ◽  
Kornel Csach ◽  
Jozef Miškuf ◽  
Alena Juríková ◽  
Štefan Demčák ◽  
...  
Keyword(s):  
Plastic Deformation ◽  
Plastic Flow ◽  
Metallic Glasses ◽  
Alloy Composition ◽  
Loading Rate ◽  
Glass Forming Ability ◽  
Loading Rates ◽  
Glass Forming ◽  
Wide Range ◽  
The Individual

Nanoindentation experiments were executed on amorphous metallic ribbons made of Fe40Ni40B20, Cu47Ti35Zr11Ni6Si1 and Zr65Cu17.5Ni10Al7.5 that differ in microhardness and glass forming ability. The individual serrated plastic flow events were analyzed in a wide range of the loading rates. In the individual pop-in events of the load-displacement (P-h) curve the contributions of plastic deformation (Δhpl) were calculated depending on the loading rate and the alloy composition. It is concluded that the contribution of the serrated plastic deformation flow varies with the composition of the alloy. The highest plastic deformation for the individual pop-ins was observed for Zr-based metallic glasses.

scholarly journals Effect of Hafnium and Zirconium to Glass Forming Ability, Thermal Stability, Plasticity Deformation and Crystallization of Ni-Free Pentabasic Ti-Based Bulk Metallic Glasses

2017 ◽  
Vol 62 (2) ◽  
pp. 1081-1087
Author(s):  
J.J. Oak ◽  
Y.H. Kim ◽  
K.C. Bae ◽  
Y.H. Park
Keyword(s):  
Thermal Stability ◽  
Plastic Deformation ◽  
Compressive Strength ◽  
Metallic Glass ◽  
Bulk Metallic Glass ◽  
Metallic Glasses ◽  
Fracture Behavior ◽  
Glass Forming Ability ◽  
High Activation ◽  
Glass Forming

AbstractThe newly designed Ti-based bulk metallic glass (BMG) in which case of fracture behavior was observed 1990MPa to compressive strength with a wide plastic deformation around 7% after process of elastic deformation. This phenomenon can be compared with those of Ti-based alloys and other Ti-based BMGs and indicates high potential to be applied in use. It was evaluated the Ti-based BMG for thermal stability that the reduced glass parameters, ΔTx,Trgand γ, are 79K, 0.50 and 0.38, respectively. In addition, it reveals high activation energies for crystallization in which are estimated toEx1= 291.77 ±9.71 kJ/mol,Ex2= 588.77 ±28.88 kJ/mol andEx3= 330.26 ±3.61 kJ/mol on kissinger plotting in this study.

Magnetic and Mechanical Properties of Fe-Co-B-Si-Nb-M (M = Al, V, Mo,) Bulk Metallic Glasses

2007 ◽  
Vol 26-28 ◽  
pp. 743-746 ◽  
Author(s):  
Oh Jib Kwon ◽  
Young Kook Lee ◽  
Jin Ju Lee ◽  
Yu Chan Kim ◽  
Eric Fleury
Keyword(s):  
Mechanical Properties ◽  
Plastic Deformation ◽  
Metallic Glass ◽  
Metallic Glasses ◽  
Glass Forming Ability ◽  
Partial Substitution ◽  
Glass Forming ◽  
Magnetization Saturation ◽  
A Minor ◽  
Minor Concentration

The compositional dependency of the glass forming ability (GFA), magnetic and mechanical properties of the Fe52Co20B20Si4Nb4 bulk metallic glass was investigated by means of the partial substitution of Co either by Al, V or Mo elements. A minor concentration of these elements enabled an increase of the GFA and fully amorphous rods of 4 mm diameter were successfully fabricated for the Fe52Co19B20Si4Nb4Al1, Fe52Co17B20Si4Nb4V3 and Fe52Co17B20Si4Nb4Mo3 alloys. While the addition of Al resulted in an increase of the magnetization saturation, V appeared as the most effective element to enhance the plastic deformation under compression.

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.

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