Physical factors controlling the ductility of bulk metallic glasses

Journal Article · Mon Dec 31 23:00:00 EST 2007 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.2998410· OSTI ID:973553

Liu, Y. ^[1]; Liu, Chain T ^[2]; Zhang, Z. ^[3]; Keppens, V. ^[3]

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1. Central South University, China
2. ORNL
3. University of Tennessee, Knoxville (UTK)

In order to identify key physical factor controlling the deformation and fracture behavior of bulk metallic glasses (BMGs), we compiled and analyzed the elastic moduli and compressive ductility for BMGs. In addition, new modulus data were generated in the critical ranges in order to facilitate the analysis. We have found that the intrinsic ductility of BMGs can be correlated with the bulk-to-shear modulus ratio B/G according to Pugh's [Philos. Mag. 45, 823 (1954) ] rule. In some individual BMG systems, for example, Fe based, the relationship seems to be very clear. The physical meaning of this correlation is discussed in terms of atomic bonding and connectivity.

• Research Organization: Oak Ridge National Laboratory (ORNL)
• Sponsoring Organization: SC USDOE - Office of Science (SC)
• DOE Contract Number: AC05-00OR22725
• OSTI ID: 973553
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 15 Vol. 93; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BONDING
DEFORMATION
DUCTILITY
FRACTURES
METALLIC GLASSES