Bending behavior and fracture surface characters for FeSiB amorphous ribbons in different free volume state

Dong, Wen‐Kui; Han, Bin; Hui, Jiaqi; Yan, Mi

doi:10.1007/s00339-020-03845-3

Cited by 4 publications

(2 citation statements)

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“…It can be seen that U and N increase sharply with the annealing temperature. The Ω increases from 0.54 nm 3 for S25 to 0.63 nm 3 for S250 and 1.01 nm 3 for S380, respectively. The N, in the STZ of the S25, S250, and S380 is estimated to be 66, 76, and 123, respectively.…”

Section: Resultsmentioning

confidence: 93%

“…After annealing treatment, the free volume of amorphous alloys is eliminated due to the random jump motion of atoms, leading to the structural relaxation of amorphous alloys. The reduction in free volume after annealing decreases the plastic deformation ability of amorphous alloys [3,4]. However, the microstructural origin of embrittlement caused by structural relaxation is not clear yet.…”

Section: Introductionmentioning

confidence: 99%

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Shear Transformation Zone and Its Correlation with Fracture Characteristics for Fe-Based Amorphous Ribbons in Different Structural States

Dong

Qian

et al. 2023

Metals

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Fe-based amorphous alloys often exhibit severe brittleness induced by annealing treatment, which increases the difficulties in handling and application in the industry. In this work, the shear transformation zone and its correlation with fracture characteristics for FeSiB amorphous alloy ribbons in different structural states were investigated. The results show that the bending strain decreases sharply with the annealing temperature increase, accompanied by decreased shear band density and the induced plastic deformation zone. Furthermore, the microscopic fracture surface features transform from a micron-scale dimple pattern to nano-scale dimples and periodic corrugations. According to nano-indentation results, the strain rate sensitivity and shear transformation zone volume change significantly upon annealing treatment, which is responsible for the deterioration of bending ductility and the transition of microscopic fracture surface features.

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Section: Resultsmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 99%