Temperature Rise Associated with Adiabatic Shear Band: Causality Clarified

Yazhou Guo; Qichao Ruan; Shengxin Zhu; Q. Wei; Haosen Chen; Jianan Lu; Bo Hu; Xihui Wu; Yulong Li; Daining Fang

doi:10.1103/PhysRevLett.122.015503

Temperature Rise Associated with Adiabatic Shear Band: Causality Clarified

Yazhou Guo, Qichao Ruan, Shengxin Zhu, Q. Wei, Haosen Chen, Jianan Lu, Bo Hu, Xihui Wu, Yulong Li, Daining Fang

Institute of Advanced Structure Technology

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

161 Citations (Scopus)

Abstract

One of the most important issues related to adiabatic shear failure is the correlation among temperature elevation, adiabatic shear band (ASB) formation and the loss of load capacity of the material. Our experimental results show direct evidence that ASB forms several microseconds after stress collapse and temperature rise reaches its maximum about 30 μs after ASB formation. This observation indicates that temperature rise cannot be the cause of ASB. Rather, it might be the result of adiabatic shear localization. As such, the traditional well-accepted thermal-softening mechanism of ASB needs to be reconsidered.

Original language	English
Article number	015503
Journal	Physical Review Letters
Volume	122
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevLett.122.015503
Publication status	Published - 10 Jan 2019

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abstract = "One of the most important issues related to adiabatic shear failure is the correlation among temperature elevation, adiabatic shear band (ASB) formation and the loss of load capacity of the material. Our experimental results show direct evidence that ASB forms several microseconds after stress collapse and temperature rise reaches its maximum about 30 μs after ASB formation. This observation indicates that temperature rise cannot be the cause of ASB. Rather, it might be the result of adiabatic shear localization. As such, the traditional well-accepted thermal-softening mechanism of ASB needs to be reconsidered.",

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AU - Guo, Yazhou

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AU - Zhu, Shengxin

AU - Wei, Q.

AU - Chen, Haosen

AU - Lu, Jianan

AU - Hu, Bo

AU - Wu, Xihui

AU - Li, Yulong

AU - Fang, Daining

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AB - One of the most important issues related to adiabatic shear failure is the correlation among temperature elevation, adiabatic shear band (ASB) formation and the loss of load capacity of the material. Our experimental results show direct evidence that ASB forms several microseconds after stress collapse and temperature rise reaches its maximum about 30 μs after ASB formation. This observation indicates that temperature rise cannot be the cause of ASB. Rather, it might be the result of adiabatic shear localization. As such, the traditional well-accepted thermal-softening mechanism of ASB needs to be reconsidered.

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Temperature Rise Associated with Adiabatic Shear Band: Causality Clarified

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