Nanoindentation in Metallic Glasses with Different Plasticity

2015 ◽  
Vol 662 ◽  
pp. 19-22
Author(s):  
Kornel Csach ◽  
Jozef Miškuf ◽  
Alena Juríková ◽  
Maria Hurakova ◽  
Václav Ocelík ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Metallic Glasses ◽  
Room Temperature ◽  
Elevated Temperatures ◽  
Glass Forming Ability ◽  
Glass Forming ◽  
Thermal Stability Of

Nanoindentation and thermomechanical experiments on three types of metallic glasses with different glass forming ability were carried out. The nanoindentation behaviour at room temperature was associated with the creep at elevated temperatures. Different discontinuity populations and their shape observed on the nanoindentation loading curves were compared with morphology of plastic deformed indent regions. The influence of the differences in thermal stability of studied alloys on the nanoindentation in these alloys were studied as well.

Formation and Thermal Stability of Cu-Based Metallic Glasses with High Glass-Forming Ability

2011 ◽  
Vol 43 (8) ◽  
pp. 2592-2597 ◽  
Author(s):  
B. W. Zhou ◽  
W. Zhang ◽  
X. G. Zhang ◽  
H. Kimura ◽  
A. Makino ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Metallic Glasses ◽  
Glass Forming Ability ◽  
Glass Forming ◽  
Thermal Stability Of

Bulk Metallic Glasses: Aluminum-Based

2019 ◽  
Author(s):  
B.J. Yang ◽  
J.H. Yao ◽  
J.Q. Wang ◽  
Y.S. Chao ◽  
E. Ma
Keyword(s):  
Thermal Stability ◽  
Glass Transition ◽  
Thermal Properties ◽  
Metallic Glasses ◽  
Bulk Metallic Glasses ◽  
Systematic Investigation ◽  
Glass Forming Ability ◽  
Atomic Cluster ◽  
Glass Forming ◽  
Thermal Stability Of

This paper details a systematic investigation of the formation of Al-based bulk metallic glasses, expanding on an earlier brief report.[] We discuss an approach for designing and predicting the best glass-forming composition in the Al–TM–RE systems, based on the atomic cluster packing model for the internal structure of the glass. The effects of additional elements in quaternary and quinary systems on the glass-forming ability and thermal stability of the glasses are also discussed. Three new compositions, Al86Ni6Y4.5Co2La1.5, Al86Ni7Y5Co1La1 and Al86Ni7Y4.5Co1La1.5, are capable of forming fully glassy rods of 1 mm in diameter; their glass transition and other thermal properties are systematically characterized.

Thermal Breakdown Kinetics of 1-Ethyl-3-Methylimidazolium Ethylsulfate Measured Using Quantitative Infrared Spectroscopy

2017 ◽  
Vol 71 (12) ◽  
pp. 2626-2631 ◽  
Author(s):  
Jeffrey L. Wheeler ◽  
McKinley Pugh ◽  
S. Jake Atkins ◽  
Jason M. Porter
Keyword(s):  
Thermal Stability ◽  
Room Temperature ◽  
Computational Models ◽  
Elevated Temperatures ◽  
Molar Absorptivity ◽  
Ir Absorption ◽  
Optical Cell ◽  
Multiple Samples ◽  
Kinetics Of ◽  
Thermal Stability Of

In this work, the thermal stability of the room temperature ionic liquid (RTIL) 1-ethyl-3-methylimidazolium ethylsulfate ([EMIM][EtSO4]) is investigated using infrared (IR) spectroscopy. Quantitative IR absorption spectral data are measured for heated [EMIM][EtSO4]. Spectra have been collected between 25 ℃ and 100 ℃ using a heated optical cell. Multiple samples and cell pathlengths are used to determine quantitative values for the molar absorptivity of [EMIM][EtSO4]. These results are compared to previous computational models of the ion pair. These quantitative spectra are used to measure the rate of thermal decomposition of [EMIM][EtSO4] at elevated temperatures. The spectroscopic measurements of the rate of decomposition show that thermogravimetric methods overestimate the thermal stability of [EMIM][EtSO4].

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