Progressive shear band propagation in metallic glasses under compression

Qu, R.T.; Liu, Z.Q.; Wang, G.; Zhang, Z.F.

doi:10.1016/j.actamat.2015.03.026

Cited by 129 publications

(49 citation statements)

References 85 publications

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“…The metallic bond breaking and reformation can occur with increasing strain, accompanied with plastically softening at the atomic scale43. In the present study, the shear fracture of the BMGs is normally formed along a primary (main) shear band44. The shear fracture actually behaves a Mode II crack separation process, as shown in Fig.…”

Section: Discussionmentioning

confidence: 55%

Rate dependent of strength in metallic glasses at different temperatures

Wang

Bian

et al. 2016

Sci Rep

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The correlation between the strength at the macroscale and the elastic deformation as well as shear cracking behavior at the microscale of bulk metallic glasses (BMGs) is investigated. The temperatures of 298 K and 77 K as well as the strain rate ranging from 10−6 s−1 to 10−2 s−1 are applied to the BMGs, in which the mechanical responses of the BMGs are profiled through the compression tests. The yield strength is associated with the activation of the elementary deformation unit, which is insensitive to the strain rate. The maximum compressive strength is linked to the crack propagation during shear fracture process, which is influenced by the strain rate. The cryogenic temperature of 77 K significantly improves the yield strength and the maximum compressive strength of the BMGs.

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Section: Discussionmentioning

confidence: 55%

Rate dependent of strength in metallic glasses at different temperatures

Wang

Bian

et al. 2016

Sci Rep

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“…3g-i. Vein-like patterns can be observed on the fracture surface of all the samples, demonstrating the typical compressive shear fracture [12,[26][27][28]. However, the fracture surface morphologies are different from each other when a close attention is paid to Fig.…”

Section: Resultsmentioning

confidence: 99%

Effect of strain rate on yielding strength of a Zr-based bulk metallic glass

Jiang

Yang

et al. 2017

Materials Science and Engineering: A

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A B S T R A C TUniaxial tension and compression experiments were performed on a typical Zr 52.5 Cu 17.9 Ni 14.6 Al 10 Ti 5 (Vit 105) bulk metallic glass over a wide range of strain rates at room temperature. It is found that the strain rate effect of the yielding strength will change from insensitive to negative with increasing strain rate above a critical value. This phenomenon can be quantitatively described by a modified cooperative-shear model of shear transformation zones that takes the adiabatic temperature rise into account. The model predicts well the present and other experimental data.

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“…The deformation behavior limits the structural reliability of MGs, which boils down to the liquid-like atomic structures [3][4][5]. A great deal of effort has been made in the recent years to study shear banding.…”

Section: Introductionmentioning

confidence: 99%