Article ID Journal Published Year Pages File Type
1500414 Scripta Materialia 2009 4 Pages PDF
Abstract

We have measured the notch toughness for a range of Cu-based bulk metallic glasses (BMGs). Alloying additions that enhance the glass-forming ability (GFA) are found to degrade the toughness. Within this particular family of Cu-BMGs, toughness is more directly correlated with strength (and consequently with the shear modulus or glass transition temperature) than with the Poisson’s ratio. The Cu49Hf42Al9 BMG exhibits the best combination of GFA and toughness.

Related Topics
Physical Sciences and Engineering Materials Science Ceramics and Composites
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