Compressive fracture morphology and mechanism of metallic glass

RT Qu, ZF Zhang - Journal of Applied Physics, 2013 - pubs.aip.org
We quantitatively investigated the fracture morphologies of Zr 52.5 Cu 17.9 Ni 14.6 Al 10 Ti 5
and Pd 78 Cu 6 Si 16 metallic glasses (MGs) under compression. The characteristic features …

Tensile fracture morphologies of bulk metallic glass

RT Qu, M Stoica, J Eckert, ZF Zhang - Journal of Applied Physics, 2010 - pubs.aip.org
The fracture morphology plays a much important role not only for the failure analysis of
materials but also for the clarification of their fracture mechanisms. However, quantitative …

Plasticity improvement of an Fe-based bulk metallic glass by geometric confinement

W Chen, KC Chan, SF Guo, P Yu - Materials Letters, 2011 - Elsevier
In this paper, the effect of nickel coating on the plasticity of a brittle Fe-based bulk metallic
glass (BMG) was investigated. By electrodepositing a nickel coating onto an …

Cavitation-induced fracture causes nanocorrugations in brittle metallic glasses

I Singh, R Narasimhan, U Ramamurty - Physical Review Letters, 2016 - APS
Brittle metallic glasses exhibit a unique and intriguing fracture morphology of periodic
nanocorrugations whose spacing and amplitude are of the order of tens of nanometers. We …

Development and microstructure optimization of Mg-based metallic glass matrix composites with in situ B2-NiTi dispersoids

W Guo, H Kato - Materials & Design, 2015 - Elsevier
In this paper, we designed a novel processing method and successfully developed in situ
precipitated B2-NiTi shape-memory-alloy reinforced Mg-based bulk metallic glass matrix …

Size-dependent failure of the strongest bulk metallic glass

R Qu, D Tönnies, L Tian, Z Liu, Z Zhang, CA Volkert - Acta Materialia, 2019 - Elsevier
Upon reducing the sample size into micrometer scale, an obvious brittle-to-ductile transition
accompanied by a drastic change of failure mode from shattering to shear-banding was …

Critical analysis of an FeP empirical potential employed to study the fracture of metallic glasses

Y He, P Yi, ML Falk - Physical review letters, 2019 - APS
An empirical potential that has been widely used to perform molecular dynamics studies on
the fracture behavior of FeP metallic glasses is shown to exhibit spinodal decomposition in …

Failure criterion for metallic glasses

Y Chen, MQ Jiang, YJ Wei, LH Dai - Philosophical Magazine, 2011 - Taylor & Francis
Metallic glasses exhibit not only multiple failure modes but also differences in ultimate
strength, plastic strain to fracture and asymmetric deviation of failure angles from 45° …

Instability of crack propagation in brittle bulk metallic glass

G Wang, KC Chan, XH Xu, WH Wang - Acta Materialia, 2008 - Elsevier
The instability of the crack tip in brittle Mg-based bulk metallic glass (BMG) is studied. The
formation of various fractographic surfaces of the BMG is associated with the instability of the …

Nature of crack-tip plastic zone in metallic glasses

Y Chen, LH Dai - International Journal of Plasticity, 2016 - Elsevier
The fracture of metallic glasses (MGs) can be induced by shear banding in a ductile mode or
by cavitation in a brittle way. Plastic zone in front of a crack tip, which is greatly involved with …