An Assessment of Binary Metallic Glasses: Correlations Between Structure, Glass Forming Ability and Stability (Preprint)

The objective of this work is to explore the influence of the atomic structure of binary metallic glasses on glass-forming ability and thermal stability. A broad assessment of binary metallic glasses is given, with information on 619 distinct binary alloys from 162 binary glass systems. For each of...

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Bibliographic Details
Main Authors: Miracle, Daniel B, Louzguine-Luzgin, Dmitri, Louzguina-Luzgina, Larissa, Inoue, Akihisa
Format: Report
Language:English
Subjects:
AMORPHOUS MATERIALS
ATOMIC STRUCTURE
BINARY ALLOYS
BINARY METALLIC GLASSES
Ceramics, Refractories and Glass
CRYSTALLIZATION
GFA(GLASS FORMING ABILITY)
GLASS
GLASS TRANSITION TEMPERATURE
INVERSE GLASS SYSTEMS
LIQUID PHASES
Mechanics
METALLIC GLASS
Metallurgy and Metallography
MICROSTRUCTURE
PE62102F
Physical Chemistry
SOLUTE ATOM FRACTION
SOLUTE-TO-SOLVENT RADIUS
STABILITY
TEMPERATURE
THERMAL PROPERTIES
THERMAL STABILITY
TOPOLOGY
WUAFRL4347RG00
WUAFRLM02R4000
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Summary:The objective of this work is to explore the influence of the atomic structure of binary metallic glasses on glass-forming ability and thermal stability. A broad assessment of binary metallic glasses is given, with information on 619 distinct binary alloys from 162 binary glass systems. For each of these glasses, the structure is quantified with the efficient cluster-packing (ECP) model, using reported glass constitutions as input. The glass transition temperatures Tg, crystallization temperatures Tx, and liquidus temperatures Tl are taken from the literature to compute the thermal stability parameters Trg = Tg /Tl, Tx /Tl, delta(Tx) = Tx - Tg and gamma = Tx/(Tg + Tl). Comparison of the atomic structures with reported amorphous thickness and thermal stability parameters gives the following major results. Binary glasses show a strong preference for solute-to-solvent atomic radius ratios, R, that produce efficient local atomic packing, consistent with earlier results. In-house contract. Submitted for publication in International Materials Review.