Nanoscale Periodic Morphologies on the Fracture Surface of Brittle Metallic Glasses | Zendy

Gang Wang | Zendy; Dan Zhao | Zendy; H. Y. Bai | Zendy; M. X. Pan | Zendy; Ailin Xia | Zendy; Bing Han | Zendy; X.K. Xi | Zendy; Yue Wu | Zendy; W. H. Wang | Zendy

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Nanoscale Periodic Morphologies on the Fracture Surface of Brittle Metallic Glasses

Author(s) -

Gang Wang,

Dan Zhao,

H. Y. Bai,

M. X. Pan,

Ailin Xia,

Bing Han,

X.K. Xi,

Yue Wu,

W. H. Wang

Publication year - 2007

Publication title -

physical review letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.688

H-Index - 673

eISSN - 1079-7114

pISSN - 0031-9007

DOI - 10.1103/physrevlett.98.235501

Subject(s) - materials science , instability , brittleness , composite material , amorphous metal , fracture toughness , fracture (geology) , nanoscopic scale , softening , fracture mechanics , nanotechnology , alloy , mechanics , physics

Out-of-plane, nanoscale periodic corrugations are observed in the dynamic fracture surface of brittle bulk metallic glasses with fracture toughness approaching that of silica glasses. A model based on the meniscus instability and plastic zone theory is used to explain such dynamic crack instability. The results indicate that the local softening mechanism in the fracture is an essential ingredient for controlling the formation of the unique corrugations, and might provide a new insight into the origin of fracture surface roughening in brittle materials.

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