Designing metallic glass matrix composites with high toughness and tensile ductility

The selection and design of modern high-performance structural engineering materials is driven by optimizing combinations of mechanical properties such as strength, ductility, toughness, elasticity and requirements for predictable and graceful (non-catastrophic) failure in service. Highly processabl...

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Bibliographic Details
Published in:Nature (London) 2008-02, Vol.451 (7182), p.1085-1089
Main Authors: Duan, Gang, Lind, Mary-Laura, Wiest, Aaron, Demetriou, Marios D, Johnson, William L, Suh, Jin-Yoo, Hofmann, Douglas C
Format: Article
Language:English
Subjects:
Alloys
Composite materials
Condensed matter: structure, mechanical and thermal properties
Deformation
Deformation and plasticity (including yield, ductility, and superplasticity)
Dendrites
Ductility
Exact sciences and technology
Humanities and Social Sciences
letter
Materials science
Mechanical and acoustical properties of condensed matter
Mechanical properties of solids
multidisciplinary
Optimization
Physics
Plasticity
Science
Science (multidisciplinary)
Strain
Structural engineering
Tension
Titanium
Zirconium
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Summary:The selection and design of modern high-performance structural engineering materials is driven by optimizing combinations of mechanical properties such as strength, ductility, toughness, elasticity and requirements for predictable and graceful (non-catastrophic) failure in service. Highly processable bulk metallic glasses (BMGs) are a new class of engineering materials and have attracted significant technological interest. Although many BMGs exhibit high strength and show substantial fracture toughness, they lack ductility and fail in an apparently brittle manner in unconstrained loading geometries. For instance, some BMGs exhibit significant plastic deformation in compression or bending tests, but all exhibit negligible plasticity (
ISSN:0028-0836
1476-4687
DOI:10.1038/nature06598