On the shear-affected zone of shear bands in bulk metallic glasses

Abstract

Notched bars of bulk metallic glasses, Pd${}_{40}$Ni${}_{40}$P${}_{20}$ and Zr${}_{52.5}$Cu${}_{17.9}$Ni${}_{14.6}$Al${}_{10}$Ti${}_5$, were deformed under 3-point bending conditions, resulting in the formation of shear bands before failure. The immediate environment of shear bands was investigated in detail using fluctuation electron microscopy to extract information on the strain-induced modifications of the medium-range order (MRO) and its lateral extension. Characteristic material-independent gradients were observed for the tensile and compressive sides of the samples indicating the impact of the local stress state on the MRO. Our results reveal an upper limit of a few microns for the lateral extension of the shear-affected environments of shear bands.

References in corpus (6)

• Microscopic Mechanism of Shear Bands in Amorphous Solids
• Quantitative measurement of density in a shear band of metallic glass monitored along its propagation direction
• Shear banding in metallic glasses described by alignments of Eshelby quadrupoles
• Probing the degree of heterogeneity within a shear band of a model glass
• Sub-micron strain analysis of local stick-slip motion of individual shear bands in a bulk metallic glass
• Impact of severe plastic deformation on the relaxation of glassy and supercooled liquid states of amorphous Pd${}_{40}$Ni${}_{40}$P${}_{20}$

Cited by in corpus (4)

• The role of minor alloying in the plasticity of bulk metallic glasses
• Unveiling the Asymmetry in Density within the Shear Bands of Metallic Glasses
• Impact of severe plastic deformation on the relaxation of glassy and supercooled liquid states of amorphous Pd${}_{40}$Ni${}_{40}$P${}_{20}$
• What renders bulk metallic glass ductile/brittle? -- new insight from the medium-range order