Results 261 to 270 of about 669,447 (300)

Thermodynamic and Viscous Behaviour of Glass Forming Melts and Glass Forming Ability

AIP Conference Proceedings, 2010
The bulk metallic glasses (BMGs) have achieved a great interest due to their scientific and potential technological applications and these are among the most extensively studied advanced materials. The understanding of the glass forming ability (GFA) of these multicomponent metallic alloys is an essential parameter to develop new non‐crystalline ...
K. S. Dubey, Arun Pratap, N. S. Saxena
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New criterion in predicting glass forming ability of various glass-forming systems

Chinese Physics B, 2008
It has been confirmed that glass-forming ability (GFA) of supercooled liquids is related to not only liquid phase stability but also the crystallization resistance. In this paper, it is found that the liquid region interval (Tl – Tg) characterized by the normalized parameter of Tg/Tl could reflect the stability of glass-forming liquids at the ...
X. H Du, J. C Huang
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Glass forming ability and microstructure of hard magnetic Nd60Al20Fe20 glass forming alloy

Intermetallics, 2006
Abstract Glass forming ability (GFA), magnetic properties and microstructure of Nd 60 Al 20 Fe 20 as-cast rod were investigated and further compared with Nd 60 Al 10 Fe 30 glass forming alloy. The rod prepared by suction casting with a diameter of 3 mm exhibits the typical amorphous nature in XRD pattern, distinct glass transition in DSC traces and
L. Xia, S.S. Fang, C.L. Jo, Y.D. Dong
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METALLIC GLASS FORMING ABILITY

1985
The present knowledge of thermodynamic and kinetic factors influencing the metallic glass forming ability GFA are discussed essentially from a thermodynamic point of view. The different attempts to calculate the free energy difference between the undercooled liquid and the crystalline phase at the glass temperature T g are presented.
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Rigidity, Connectivity, and Glass‐Forming Ability

Journal of the American Ceramic Society, 1993
Following the ideas of Zachariasen and of Cooper, it is argued that the glass‐forming ability of a system can be rationalized in terms of the degrees of freedom available to form an infinitely large topologically disordered network composed of rigid structural units connected at vertices, edges, or faces.
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Identify the best glass forming ability criterion

Intermetallics, 2010
Understanding glass formation and predicting glass forming ability (GFA) are vitally important and they are long-standing challenges in the metallic glasses community. Recently, a number of criteria have been developed to evaluate GFA, based mainly on fitting the experimental data of the critical cooling rate for glass forming.
Sheng Guo, Z.P. Lu, C.T. Liu
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Glass-forming ability and glass stability in simple systems

Journal of Non-Crystalline Solids, 1994
The interrelationship between glass-forming ability and stability of glass to devitrification is examined. Quantitative criteria for assessing the latter properties are adopted. Glass-forming ability is gauged by the critical cooling rate, Rc, and glass stability by the difference between the temperature of maximum crystallization in a non-isothermal ...
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Correlation between fragility and glass-forming ability/plasticity in metallic glass-forming alloys

Applied Physics Letters, 2007
In the present study, the authors draw attention to the relationship among fragility index (m), glass-forming ability (GFA), and plasticity in various metallic glass-forming alloys (MGAs), and show that the m value is closely related to both characteristics.
E. S. Park, J. H. Na, D. H. Kim
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Correlation between volumetric change and glass-forming ability of metallic glass-forming alloys

Applied Physics Letters, 2008
We draw attention to the relationship between volumetric change and glass-forming ability (GFA) in various metallic glass-forming alloys. The critical cooling rate can be expressed as Rc=2.5×10−5exp(5.0×102Vlg), where Vlg is defined as (Vl-Vg)∕Vl.
E. S. Park, D. H. Kim
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Glass Forming Ability Criterion

Materials Science Forum, 1987
Mohammed Saad, Marcel Poulain
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