Metallic Glasses and Amorphous Alloys

Metallic glasses are metal alloys cooled fast enough to freeze their atoms into a disordered, non-crystalline arrangement, rather than the regular lattices found in ordinary metals. This amorphous structure gives them unusual combinations of high strength, elasticity, and corrosion resistance, making them attractive for applications ranging from precision components to biomedical devices. A central challenge is understanding how deformation concentrates into narrow shear bands — thin zones where the material flows and can suddenly fracture — and how to engineer alloys that either suppress this brittleness or exploit controlled nanocrystallization to improve toughness. Researchers are also working to identify compositions with sufficient glass-forming ability to produce large, bulk-scale parts without crystallizing, which remains a significant barrier to wider industrial use.

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Keywords

Bulk Metallic GlassesAmorphous AlloysMechanical BehaviorGlass Forming AbilityShear BandsNanocrystallization