Ductility and work hardening in nano-sized metallic glasses

Ductility and work hardening in nano-sized metallic glasses

Work-Hardening Induced Tensile Ductility of Bulk Metallic Glasses via High-Pressure Torsion

The mechanical properties of engineering materials are key for ensuring safety and reliability. However, the plastic deformation of BMGs is confined to narrow regions in shear bands, which usually result in limited ductilities and catastrophic failures at low homologous temperatures. The quasi-brittle failure and lack of tensile ductility undercut the potential applications of BMGs. In this rep...

Tunable Tensile Ductility in Metallic Glasses

Widespread adoption of metallic glasses (MGs) in applications motivated by high strength and elasticity combined with plastic-like processing has been stymied by their lack of tensile ductility. One emerging strategy to couple the attractive properties of MGs with resistance to failure by shear localization is to employ sub-micron sample or feature length scales, although conflicting results sh...

Designing tensile ductility in metallic glasses

Effectiveness of a second phase in metallic glass heterostructures to improve mechanical properties varies widely. Unfortunately, methods to fabricate such heterostructures like foams and composites do not allow controlled variation of structural features. Here we report a novel strategy, which allows us to vary heterostructural features independently, thereby enabling a systematic and quantita...

Intrinsic Nano-Ductility of Glasses: The Critical Role of Composition

*Correspondence: Mathieu Bauchy , 5731B Boelter Hall, Department of Civil and Environmental Engineering, University of California Los Angeles, Los Angeles, CA 90095-1593, USA e-mail: [email protected] Understanding, predicting, and eventually improving the resistance to fracture for silicate materials is of primary importance to design tougher new glasses suitable for advanced applications. Howev...