Results 261 to 270 of about 165,306 (295)
Some of the next articles are maybe not open access.
METALLIC GLASS FORMING ABILITY
1985The 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.
openaire +1 more source
A New Criterion for Evaluating the Glass-Forming Ability of Bulk Metallic Glasses
Materials Science and Engineering: A, 2006A new criterion, derived according to the classical theory of nucleation and growth and the perspective of phase transformation kinetics, has been proposed for evaluating the glass-forming ability (GFA) of bulk metallic glasses (BMGs) by measuring the characteristic thermal parameters. A survey of the readily available experimental data associated with
Qingjun Chen +5 more
openaire +1 more source
Glass-forming ability and glass stability in simple systems
Journal of Non-Crystalline Solids, 1994The 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 ...
openaire +1 more source
Glass forming ability and microstructure of hard magnetic Nd60Al20Fe20 glass forming alloy
Intermetallics, 2006Abstract 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
openaire +1 more source
New criterion in predicting glass forming ability of various glass-forming systems
Chinese Physics B, 2008It 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
openaire +1 more source
Effects of partitioned enthalpy of mixing on glass-forming ability
The Journal of Chemical Physics, 2015We explore the inherent reason at atomic level for the glass-forming ability of alloys by molecular simulation, in which the effect of partitioned enthalpy of mixing is studied. Based on Morse potential, we divide the enthalpy of mixing into three parts: the chemical part (Δ Enn), strain part (Δ Estrain), and non-bond part (Δ Ennn).
Wen-Xiong, Song, Shi-Jin, Zhao
openaire +2 more sources
Matching Glass-Forming Ability with the Density of the Amorphous Phase
Science, 2008The density of the amorphous phase of metals is generally thought to be related to glass formation, but this correlation has not been demonstrated experimentally to date. In this work, systematic deflection measurements using microcantilevers and a combinatorial deposition method show a correlation between glass-forming ability and the density change ...
Li, Y. +3 more
openaire +2 more sources
Exceptionally high glass-forming ability of an FeCoCrMoCBY alloy
Applied Physics Letters, 2005It has been well documented that the maximum thickness of as-cast glassy samples attainable through conventional metallurgical routes is the decisive criteria for measuring the glass-forming ability (GFA) of bulk metallic glasses (BMGs). Here we report the exceptionally high GFA of an FeCoCrMoCBY alloy which can be fabricated in the form of glassy rods
J. Shen +4 more
openaire +1 more source
Rigidity, Connectivity, and Glass‐Forming Ability
Journal of the American Ceramic Society, 1993Following 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.
openaire +1 more source
Glass Forming Ability Criterion
Materials Science Forum, 1987Mohammed Saad, Marcel Poulain
openaire +1 more source