Microstructure Controlled Shear Band Pattern Formation and Enhanced Plasticity of Bulk Metallic Glasses Containing in situ Formed Ductile Phase Dendrite Dispersions

Journal Article · Mon Mar 27 00:00:00 EST 2000 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.84.2901· OSTI ID:20215867

Hays, C C; Kim, C P; Johnson, W L

Results are presented for a ductile metal reinforced bulk metallic glass matrix composite based on glass forming compositions in the Zr-Ti-Cu-Ni-Be system. Primary dendrite growth and solute partitioning in the molten state yields a microstructure consisting of a ductile crystalline Ti-Zr-Nb {beta} phase, with bcc structure, in a Zr-Ti-Nb-Cu-Ni-Be bulk metallic glass matrix. Under unconstrained mechanical loading organized shear band patterns develop throughout the sample. This results in a dramatic increase in the plastic strain to failure, impact resistance, and toughness of the metallic glass. (c) 2000 The American Physical Society.

• OSTI ID: 20215867
• Journal Information: Physical Review Letters, Vol. 84, Issue 13; Other Information: PBD: 27 Mar 2000; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
METALLIC GLASSES
COMPOSITE MATERIALS
ZIRCONIUM ALLOYS
TITANIUM ALLOYS
COPPER ALLOYS
NICKEL ALLOYS
BERYLLIUM ALLOYS
MICROSTRUCTURE
DENDRITES
MECHANICAL PROPERTIES
MECHANICAL TESTS
STRESSES
DYNAMIC LOADS
PHYSICAL METALLURGY
EXPERIMENTAL DATA