Shear band fracture in metallic glass: Sample size effect

Qu, R.T.; Wang, S.G.; Wang, X.D.; Wu, Shaojie; Zhang, Z.F.

doi:10.1016/j.msea.2018.10.078

Cited by 21 publications

(2 citation statements)

References 36 publications

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“…Guo et al [12] reported that the creep plasticity in Ni 78 P 22 NGs is more pronounced through nanoindentation measurements. Although the obtained experimental results are consistent with those simulated by molecular dynamics [33][34][35][36][37][38][39], unlike the sample size effects on the plasticity of MGs [1,2,40,41], the experimental results that reveal the effects of sizes of glassy grains on mechanical behaviors of NGs, are yet incomplete.…”

Section: Introductionsupporting

confidence: 65%

The effects of glass–glass interfaces on thermodynamic and mechanical properties of Co–Fe–P metallic nano-glasses

Zheng

2021

Journal of Materials Research

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Pulse electrodeposition is utilized to prepare Co-Fe-P metallic nano-glasses (NGs) containing glassy grains with an average size D < 100 nm. The effects of glass-glass interfaces (GGIs) on thermodynamic and mechanical properties of NGs are systematically studied. The glass transitions in NGs as characterized by differential scanning calorimetry and dynamic mechanical analysis show that they are strongly affected by D or the volume fraction of GGIs. In comparison with those for conventional metallic glasses, a predominant internal-friction peak corresponding to the glass transition is observed for NGs with reduced D, suggesting that the GGIs are in a glassy state much different with that of glassy grains in NGs. Nanoindentation measurements on the hardness and volume of shear transformation zones reveal that the GGIs could accommodate plastic strains in NGs, where homogeneous plastic deformation occurs.

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Section: Introductionsupporting

confidence: 65%

The effects of glass–glass interfaces on thermodynamic and mechanical properties of Co–Fe–P metallic nano-glasses

Zheng

2021

Journal of Materials Research

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“…at a temperature where the shear-band propagation rate exceeds the applied deformation rate [4,5]. It is generally accepted that the sliding stability of shear bands can be markedly improved with a reduction in sample size owing to the reduced energy release rate [6][7][8]. Since the critical shear offset for shear fracture has been found to be size-independent, an individual shear band can contribute more plastic strain prior to failure in smaller sample sizes [5,9].…”

Section: Introductionmentioning

confidence: 99%