Plastic deformation of a Co-based metallic glass composite with in situ precipitated dendritic phases

Jitang Fan; Zhefeng Zhang; Baolong Shen; Scott X. Mao

doi:10.1016/j.scriptamat.2008.05.017

Plastic deformation of a Co-based metallic glass composite with in situ precipitated dendritic phases

Jitang Fan, Zhefeng Zhang^*, Baolong Shen, Scott X. Mao

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

Abstract

A new Co₄₃Fe₂₀Ta_5.5B_31.5 metallic glass matrix composite was cast with in situ precipitated crystalline dendrite phases. This composite has particular plasticity properties with a large stress rise after yielding under uniaxial compressive test, which offsets the strength loss, together with local shear deformation and plastic flow within the vein-like structure. In addition, some shear bands - also with the vein-like structure - are observed ahead of the cracks. This indicates that the local shear deformation is triggered by the local shear softening mechanism.

Original language	English
Pages (from-to)	603-606
Number of pages	4
Journal	Scripta Materialia
Volume	59
Issue number	6
DOIs	https://doi.org/10.1016/j.scriptamat.2008.05.017
Publication status	Published - Sept 2008
Externally published	Yes

Keywords

Cobalt
Composites
Metallic glasses
Plastic deformation
Shear bands

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10.1016/j.scriptamat.2008.05.017

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Fan, J., Zhang, Z., Shen, B., & Mao, S. X. (2008). Plastic deformation of a Co-based metallic glass composite with in situ precipitated dendritic phases. Scripta Materialia, 59(6), 603-606. https://doi.org/10.1016/j.scriptamat.2008.05.017

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AU - Fan, Jitang

AU - Zhang, Zhefeng

AU - Shen, Baolong

AU - Mao, Scott X.

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Y1 - 2008/9

N2 - A new Co43Fe20Ta5.5B31.5 metallic glass matrix composite was cast with in situ precipitated crystalline dendrite phases. This composite has particular plasticity properties with a large stress rise after yielding under uniaxial compressive test, which offsets the strength loss, together with local shear deformation and plastic flow within the vein-like structure. In addition, some shear bands - also with the vein-like structure - are observed ahead of the cracks. This indicates that the local shear deformation is triggered by the local shear softening mechanism.

AB - A new Co43Fe20Ta5.5B31.5 metallic glass matrix composite was cast with in situ precipitated crystalline dendrite phases. This composite has particular plasticity properties with a large stress rise after yielding under uniaxial compressive test, which offsets the strength loss, together with local shear deformation and plastic flow within the vein-like structure. In addition, some shear bands - also with the vein-like structure - are observed ahead of the cracks. This indicates that the local shear deformation is triggered by the local shear softening mechanism.

KW - Cobalt

KW - Composites

KW - Metallic glasses

KW - Plastic deformation

KW - Shear bands

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JO - Scripta Materialia

JF - Scripta Materialia

IS - 6

ER -

Plastic deformation of a Co-based metallic glass composite with in situ precipitated dendritic phases

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Keywords

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