Applied Physics Letters · 1993 · 2.4K citations · 10 references
Natural SciencesMaterials EngineeringMaterials ScienceMaterials CharacterizationMetallic MaterialsMetallurgyAlloysCastingCrystallization ProcessesGlass MaterialsMetal CastingMetalsCooling Rate EffectsCrystallization In GlassGlass FormationGlass TransitionGlass Transition TemperatureGlass-forming AbilityMelting PointMetallic Glasses
The study reports on a new family of metallic alloys with excellent glass‑forming ability and discusses the origins of this exceptional property. The authors prepared up to 14‑mm‑diameter rods by casting in silica and studied the undercooled liquid and crystallization behavior over a wide temperature range using scanning calorimetry. The glassy phase can be retained at cooling rates of about 10 K/s or less, and the material exhibits characteristic properties presented in the study.
We report on the properties of one example of a new family of metallic alloys which exhibit excellent glass forming ability. The critical cooling rate to retain the glassy phase is of the order of 10 K/s or less. Large samples in the form of rods ranging up to 14 mm in diameter have been prepared by casting in silica containers. The undercooled liquid alloy has been studied over a wide range of temperatures between the glass transition temperature and the thermodynamic melting point of the equilibrium crystalline alloy using scanning calorimetry. Crystallization of the material has been studied. Some characteristic properties of the new material are presented. The origins of exceptional glass forming ability of these new alloys are discussed.
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