Adiabatic shear localization in nanostructured face centered cubic metals under uniaxial compression

Jianguo Li; Tao Suo; Chongxiang Huang; Yulong Li; Hongtao Wang; Jiabin Liu

doi:10.1016/j.matdes.2016.05.081

Adiabatic shear localization in nanostructured face centered cubic metals under uniaxial compression

Jianguo Li, Tao Suo, Chongxiang Huang, Yulong Li, Hongtao Wang, Jiabin Liu

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

24 Scopus citations

Abstract

In this work, the dynamic behavior of nanostructured Cu-11.14% Al alloy with face-centered cubic (FCC) structure has been investigated using split Hopkinson pressure bar. At high strain rate uniaxial compression (strain rate ~ 4 × 10³ s^-1), a sharp stress collapse was observed in the plastic regime of the specimens. Post-loading examinations verified the appearance of adiabatic shear band (ASB), which has rarely been observed in FCC metals under uniaxial loading. Adiabatic heating within the ASBs has led to recrystallization, resulting in remarkably refined and defect-free nanocrystalline grains. The occurrence of ASBs in such an FCC alloy can be explained based on established mechanistic models.

Original language	English
Pages (from-to)	262-267
Number of pages	6
Journal	Materials and Design
Volume	105
DOIs	https://doi.org/10.1016/j.matdes.2016.05.081
State	Published - 5 Sep 2016

Keywords

Adiabatic shear band
FCC structure
Hopkinson bar
Nanostructured

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10.1016/j.matdes.2016.05.081

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title = "Adiabatic shear localization in nanostructured face centered cubic metals under uniaxial compression",

abstract = "In this work, the dynamic behavior of nanostructured Cu-11.14% Al alloy with face-centered cubic (FCC) structure has been investigated using split Hopkinson pressure bar. At high strain rate uniaxial compression (strain rate ~ 4 × 103 s-1), a sharp stress collapse was observed in the plastic regime of the specimens. Post-loading examinations verified the appearance of adiabatic shear band (ASB), which has rarely been observed in FCC metals under uniaxial loading. Adiabatic heating within the ASBs has led to recrystallization, resulting in remarkably refined and defect-free nanocrystalline grains. The occurrence of ASBs in such an FCC alloy can be explained based on established mechanistic models.",

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T1 - Adiabatic shear localization in nanostructured face centered cubic metals under uniaxial compression

AU - Li, Jianguo

AU - Suo, Tao

AU - Huang, Chongxiang

AU - Li, Yulong

AU - Wang, Hongtao

AU - Liu, Jiabin

PY - 2016/9/5

Y1 - 2016/9/5

N2 - In this work, the dynamic behavior of nanostructured Cu-11.14% Al alloy with face-centered cubic (FCC) structure has been investigated using split Hopkinson pressure bar. At high strain rate uniaxial compression (strain rate ~ 4 × 103 s-1), a sharp stress collapse was observed in the plastic regime of the specimens. Post-loading examinations verified the appearance of adiabatic shear band (ASB), which has rarely been observed in FCC metals under uniaxial loading. Adiabatic heating within the ASBs has led to recrystallization, resulting in remarkably refined and defect-free nanocrystalline grains. The occurrence of ASBs in such an FCC alloy can be explained based on established mechanistic models.

AB - In this work, the dynamic behavior of nanostructured Cu-11.14% Al alloy with face-centered cubic (FCC) structure has been investigated using split Hopkinson pressure bar. At high strain rate uniaxial compression (strain rate ~ 4 × 103 s-1), a sharp stress collapse was observed in the plastic regime of the specimens. Post-loading examinations verified the appearance of adiabatic shear band (ASB), which has rarely been observed in FCC metals under uniaxial loading. Adiabatic heating within the ASBs has led to recrystallization, resulting in remarkably refined and defect-free nanocrystalline grains. The occurrence of ASBs in such an FCC alloy can be explained based on established mechanistic models.

KW - Adiabatic shear band

KW - FCC structure

KW - Hopkinson bar

KW - Nanostructured

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DO - 10.1016/j.matdes.2016.05.081

M3 - 文章

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SN - 0264-1275

VL - 105

SP - 262

EP - 267

JO - Materials and Design

JF - Materials and Design

ER -

Adiabatic shear localization in nanostructured face centered cubic metals under uniaxial compression

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Keywords

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