scholarly journals Heat Effects Occurring in the Supercooled Liquid State and Upon Crystallization of Metallic Glasses as a Result of Thermally Activated Evolution of Their Defect Systems

Metals ◽  
2020 ◽  
Vol 10 (3) ◽  
pp. 417 ◽  
Author(s):  
Andrei Makarov ◽  
Gennadii Afonin ◽  
Yurii Mitrofanov ◽  
Nikolai Kobelev ◽  
Vitaly Khonik
Keyword(s):  
Metallic Glasses ◽  
Liquid State ◽  
Supercooled Liquid ◽  
Shear Moduli ◽  
Thermally Activated ◽  
Supercooled Liquid State ◽  
Heat Effects ◽  
Temperature Dependences ◽  
Defect System ◽  
Kinetics Of

We show that the kinetics of endothermal and exothermal effects occurring in the supercooled liquid state and upon crystallization of metallic glasses can be well reproduced using temperature dependences of their shear moduli. It is argued that the interrelation between the heat effects and shear modulus relaxation reflects thermally activated evolution of interstitial-type defect system inherited from the maternal melt.

Micro mold filling kinetics of metallic glasses in supercooled liquid state

2013 ◽  
Vol 113 (10) ◽  
pp. 104505 ◽  
Author(s):  
J. Ma ◽  
L. S. Huo ◽  
D. Q. Zhao ◽  
W. H. Wang
Keyword(s):  
Metallic Glasses ◽  
Liquid State ◽  
Supercooled Liquid ◽  
Mold Filling ◽  
Supercooled Liquid State ◽  
Kinetics Of

Correlation between local structure and stability of supercooled liquid state in Zr-based metallic glasses

2007 ◽  
Vol 449-451 ◽  
pp. 90-94 ◽  
Author(s):  
Junji Saida ◽  
Muneyuki Imafuku ◽  
Shigeo Sato ◽  
Takashi Sanada ◽  
Eiichiro Matsubara ◽  
...  
Keyword(s):  
Metallic Glasses ◽  
Local Structure ◽  
Liquid State ◽  
Supercooled Liquid ◽  
Structure And Stability ◽  
Supercooled Liquid State

The brittleness of post-treatment of 3D printed Zr-based metallic glasses in supercooled liquid state

2020 ◽  
Vol 782 ◽  
pp. 139259
Author(s):  
Di Ouyang ◽  
Qian Zheng ◽  
Liang Wang ◽  
Hao Wang ◽  
Chong Yang ◽  
...  
Keyword(s):  
Metallic Glasses ◽  
Liquid State ◽  
Supercooled Liquid ◽  
Post Treatment ◽  
Supercooled Liquid State ◽  
3D Printed

Effect of loading rate on crystallization of metallic glass supercooled liquids

2020 ◽  
Vol 1 (3) ◽  
pp. 18-21
Author(s):  
E. Davoodi ◽  
M. Hasan ◽  
S. Rana ◽  
G. Kumar
Keyword(s):  
Metallic Glass ◽  
Metallic Glasses ◽  
Liquid State ◽  
Loading Rate ◽  
Supercooled Liquid ◽  
Supercooled Liquids ◽  
Onset Temperature ◽  
Crystallization Time ◽  
Processing Temperature ◽  
Supercooled Liquid State

Metallic glasses exhibit unique thermoplastic processing capability, which is enabled by their metastable supercooled liquid state below the crystallization temperature. The thermoplastic processing critically depends on the crystallization time (processing time window), temperature (viscosity), applied load, and strain-rate. Among these parameters, the effects of crystallization time and processing temperature have been extensively studied. However, the effects of load and loading rate have not been thoroughly investigated. In this work, we performed a systematic study of load on the supercooled liquid state of three metallic glass formers: Pt-based, Zr-based, and Pd-based. The results show that the load-response of a metallic glass supercooled liquids is strongly composition dependent. The onset temperature of crystallization decreases with increasing load in Pt-based metallic glass whereas for Zr-based and Pd-based metallic glasses the onset temperature remains unchanged. The crystallization peak time is reduced for all three metallic glasses after thermoplastic forming. The results are discussed in terms of nucleation and growth of crystallites in metallic glasses.

Impact of Supramolecular Aggregation on the Crystallization Kinetics of Organic Compounds from the Supercooled Liquid State

2017 ◽  
Vol 14 (6) ◽  
pp. 2126-2137 ◽  
Author(s):  
Arjun Kalra ◽  
Patrick Tishmack ◽  
Joseph W. Lubach ◽  
Eric J. Munson ◽  
Lynne S. Taylor ◽  
...  
Keyword(s):  
Organic Compounds ◽  
Crystallization Kinetics ◽  
Liquid State ◽  
Supercooled Liquid ◽  
Supercooled Liquid State ◽  
Kinetics Of ◽  
Supramolecular Aggregation
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