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Special Issue "Amorphous Alloys"

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A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Material Sciences and Nanotechnology".

Deadline for manuscript submissions: closed (31 October 2010)

Special Issue Editors

Guest Editor
Prof. Dr. Alain R. Yavari

Euronano-SIMaP, Institut Polytechnique de Grenoble (INPG), 1130 rue de la Piscine, BP 75, 38402 Saint-Martin-d'Hères, France
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Guest Editor
Dr. Konstantinos Georgarakis

WPI-AIMR, Tohoku University, Japan; Euronano-SIMaP-INP Grenoble, 1130 rue de la Piscine, BP 75, 38402 Saint-Martin-d'Hères, France
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Special Issue Information

Dear Colleagues,

Amorphous alloys are metastable materials that lack the long range order of conventional crystalline metals. They are often produced by casting and rapid quenching techniques, when nucleation and growth of crystalline phases are suppressed during cooling of liquid alloys. In addition, amorphous alloys can be obtained by several other methods such as electro-deposition, physical and chemical vapor deposition, spray deposition, solid state reactions and mechanical milling. In spite of their non-crystalline structure, the attractive interactions and the size differences between atomic species constituting an amorphous alloy, lead to a short and medium-range order characterized by clusters of atoms which connect to fill the space nearly as densely as their crystalline counterparts. The amorphous structure leads to a combination of exceptional mechanical, electrochemical, tribological and magnetic properties which are often superior to those of their crystalline counterparts and therefore attractive for “high-end” applications.
Thus, amorphous alloys have emerged with the progress in Materials Science as an important new category of materials with unique properties, unusual structures and high potential for cutting edge applications in various industrial sectors.

Prof. Dr. Alain. R. Yavari
Dr. Konstantinos Georgarakis
Guest Editors

Keywords

  • metallic glasses
  • amorphous alloys
  • liquid alloys
  • glassy atomic structure
  • suppression of crystallization
  • non crystalline metals
  • size dependence of properties

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Published Papers (2 papers)

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Review

Open AccessReview Thermophysical Properties of Undercooled Alloys: An Overview of the Molecular Simulation Approaches
Int. J. Mol. Sci. 2011, 12(1), 278-316; doi:10.3390/ijms12010278
Received: 5 November 2010 / Revised: 29 November 2010 / Accepted: 15 December 2010 / Published: 10 January 2011
Cited by 7 | PDF Full-text (839 KB) | HTML Full-text | XML Full-text
Abstract
We review the studies on the thermophysical properties of undercooled metals and alloys by molecular simulations in recent years. The simulation methods of melting temperature, enthalpy, specific heat, surface tension, diffusion coefficient and viscosity are introduced and the simulated results are summarized. By
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We review the studies on the thermophysical properties of undercooled metals and alloys by molecular simulations in recent years. The simulation methods of melting temperature, enthalpy, specific heat, surface tension, diffusion coefficient and viscosity are introduced and the simulated results are summarized. By comparing the experimental results and various theoretical models, the temperature and the composition dependences of the thermophysical properties in undercooled regime are discussed. Full article
(This article belongs to the Special Issue Amorphous Alloys)
Open AccessReview Liquid-Liquid Phase Transition and Glass Transition in a Monoatomic Model System
Int. J. Mol. Sci. 2010, 11(12), 5184-5200; doi:10.3390/ijms11125184
Received: 16 November 2010 / Revised: 13 December 2010 / Accepted: 13 December 2010 / Published: 16 December 2010
Cited by 6 | PDF Full-text (304 KB) | HTML Full-text | XML Full-text
Abstract
We review our recent study on the polyamorphism of the liquid and glass states in a monatomic system, a two-scale spherical-symmetric Jagla model with both attractive and repulsive interactions. This potential with a parametrization for which crystallization can be avoided and both the
[...] Read more.
We review our recent study on the polyamorphism of the liquid and glass states in a monatomic system, a two-scale spherical-symmetric Jagla model with both attractive and repulsive interactions. This potential with a parametrization for which crystallization can be avoided and both the glass transition and the liquid-liquid phase transition are clearly separated, displays water-like anomalies as well as polyamorphism in both liquid and glassy states, providing a unique opportunity to study the interplay between the liquid-liquid phase transition and the glass transition. Our study on a simple model may be useful in understanding recent studies of polyamorphism in metallic glasses. Full article
(This article belongs to the Special Issue Amorphous Alloys)

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