Multicomponent bulk metallic glasses with elevated-temperature resistance

Inoue, Akihisa; Kong, F.L.; Zhu, Shengli; Greer, A.L.

doi:10.1557/mrs.2019.253

Cited by 10 publications

(2 citation statements)

References 35 publications

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“…HEAs with multiple principal elements 23,43 have shown great potential as a new class of metal mixology for high-temperature applications. 25,44 In their article, Inoue et al 45 describe the latest progress in metallic alloys with elevated-temperature resistance in the form of glassy/amorphous structures, such as bulk metallic glass materials, rather than a crystalline structure. By introducing specific crystalline phases in an amorphous matrix (Figure 2), 46 BMG-composite materials demonstrate improved plasticity and toughness when compared to monolithic amorphous materials.…”

Section: Why Metal Mixology?mentioning

confidence: 99%

High-temperature materials for structural applications: New perspectives on high-entropy alloys, bulk metallic glasses, and nanomaterials

Huang

Liaw

2019

MRS Bull.

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Section: Why Metal Mixology?mentioning

confidence: 99%

High-temperature materials for structural applications: New perspectives on high-entropy alloys, bulk metallic glasses, and nanomaterials

Huang

Liaw

2019

MRS Bull.

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“…Physical aging can be particularly severe in MGs, more than in other glasses like network or molecular systems, and can lead to ductile to brittle transitions, fractures and crystallization. Aging can therefore produce annoying technological drawbacks, since it makes the amorphous arrested state difficult to control during technological applications [5,6]. In this respect, the knowledge of the microscopic mechanisms responsible for relaxation and aging in MGs is critical as it allows to predict and control the behaviour of glasses over time and during applications.…”

Section: Introductionmentioning

confidence: 99%

New pathways to control the evolution of the atomic motion in metallic glasses

Cornet¹,

Ruta²

2024

Comptes Rendus. Physique

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Metallic glass formers are a relatively new entry in glass physics, which has attracted large interest in both physics and materials science communities due to the unique mechanical and structural properties of these materials. Physical aging is however one of the main obstacle to their widespread use as it affects their properties at all length scales. The knowledge of the microscopic mechanisms inducing aging and relaxation is therefore extremely important for both fundamental and applied sciences. In this article we present a review of the recent advances made with the X-ray photon correlation spectroscopy technique on the study of the collective particle motion and physical aging in metallic glasses at the atomic level. We show that a careful tuning of the sample preparation or the application of specific thermal protocols have the potential to drive the glass into more aged or rejuvenated microscopic configurations with different stabilities.Résumé. Les verres métalliques sont des matériaux qui suscitent une grande attention en raison de leurs propriétés exceptionnelles, notamment leur résistance à la corrosion ainsi que leur haute résistance à la fracture combinée à une large déformation élastique. De plus, certaines compositions permettent une vitrification avec des vitesses de refroidissement relativement lente, permettant la synthèse de matériaux massifs, avec des rayons critiques de synthèse supérieurs au centimètre, ouvrant la voie à une utilisation industrielle des verres métalliques.Néanmoins, tous les verres sont sujet à une relaxation spontanée vers l'état liquide, plus ou moins lente, appelée vieillissement, et qui affecte la structure, la dynamique et les propriétés macroscopiques du verre. Dans le cas des verres métallique, les effets du vieillissement sont particulièrement importants, incluant une fragilité accrue du verre, et bloquent leur potentiel applicatif.De fait, la connaissance et la compréhension des mécanismes microscopiques associés au vieillissement font l'objet d'une recherche intense, tant du point de vue applicatif que fondamental. Dans cet article, nous présentons les récents développements de la spectroscopie de corrélation des photons des rayons X (X-ray Photon Correlation Spectroscopy, ou XPCS), qui permet de quantifier la mobilité atomique au

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Oxidation of a Zr46Cu46Al7Gd1 bulk metallic glass detected via optical characterizations

Xie

Cao

et al. 2020

Sci. China Mater.

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Oxidation of metallic glasses has been shown to be different from crystalline alloys due to the disordered atomic structures and far-from-equilibrium state, and quick characterization is required to reveal their early stage oxidation. In this study, we investigated the oxidation behavior of a Zr 46 Cu 46 Al 7 Gd 1 bulk metallic glass by measuring the changes of optical constants via spectroscopic ellipsometry. Characterizations with X-ray diffraction, scanning electron microscopy, and thermogravimetric analyzer confirmed that the changes of pseudo-optical constants reflected not only the onset temperature at which the alloys underwent obvious oxidation, but also the subtle oxidation which was tedious to characterize. Our study suggests a more efficient and accurate approach to understand the oxidation of metallic glasses with temperature, time and compositions.

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Multicomponent bulk metallic glasses with elevated-temperature resistance

Abstract: Abstract

Cited by 10 publications

References 35 publications

High-temperature materials for structural applications: New perspectives on high-entropy alloys, bulk metallic glasses, and nanomaterials

High-temperature materials for structural applications: New perspectives on high-entropy alloys, bulk metallic glasses, and nanomaterials

New pathways to control the evolution of the atomic motion in metallic glasses

Oxidation of a Zr46Cu46Al7Gd1 bulk metallic glass detected via optical characterizations

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