Grain-subdivision-dominated microstructure evolution in shear bands at high rates

Xiaolong Ma; Dexin Zhao; Shwetabh Yadav; Dinakar Sagapuram; Kelvin Y. Xie

doi:10.1080/21663831.2020.1759155

Grain-subdivision-dominated microstructure evolution in shear bands at high rates

Xiaolong Ma, Dexin Zhao, Shwetabh Yadav, Dinakar Sagapuram^*, Kelvin Y. Xie^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

17 Citations (Scopus)

Abstract

Shear banding is an important deformation and failure mechanism in metallic systems, especially at high-rate straining. Dynamic recrystallization was often reported to account for the refined microstructure of shear bands but rarely confirmed using direct quantitative measurement. Here, we employ quantitative precession electron diffraction analysis to uncover shear band microstructure in pure titanium. The results reveal that the microstructure is dominated by early stages of grain subdivision process. Dynamic recrystallization is not as prevalent as perceived conventionally. Our results offer key insights into understanding shear banding and highlight the need for quantitative analyses of shear band microstructure.

Original language	English
Pages (from-to)	328-334
Journal	Materials Research Letters
Volume	8
Issue number	9
Online published	19 May 2020
DOIs	https://doi.org/10.1080/21663831.2020.1759155
Publication status	Published - 2020
Externally published	Yes

Research Keywords

dynamic recrystallization
grain subdivision
precession electron diffraction
Shear banding

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title = "Grain-subdivision-dominated microstructure evolution in shear bands at high rates",

abstract = "Shear banding is an important deformation and failure mechanism in metallic systems, especially at high-rate straining. Dynamic recrystallization was often reported to account for the refined microstructure of shear bands but rarely confirmed using direct quantitative measurement. Here, we employ quantitative precession electron diffraction analysis to uncover shear band microstructure in pure titanium. The results reveal that the microstructure is dominated by early stages of grain subdivision process. Dynamic recrystallization is not as prevalent as perceived conventionally. Our results offer key insights into understanding shear banding and highlight the need for quantitative analyses of shear band microstructure.",

keywords = "dynamic recrystallization, grain subdivision, precession electron diffraction, Shear banding",

author = "Xiaolong Ma and Dexin Zhao and Shwetabh Yadav and Dinakar Sagapuram and Xie, {Kelvin Y.}",

year = "2020",

doi = "10.1080/21663831.2020.1759155",

language = "English",

volume = "8",

pages = "328--334",

journal = "Materials Research Letters",

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TY - JOUR

T1 - Grain-subdivision-dominated microstructure evolution in shear bands at high rates

AU - Ma, Xiaolong

AU - Zhao, Dexin

AU - Yadav, Shwetabh

AU - Sagapuram, Dinakar

AU - Xie, Kelvin Y.

PY - 2020

Y1 - 2020

N2 - Shear banding is an important deformation and failure mechanism in metallic systems, especially at high-rate straining. Dynamic recrystallization was often reported to account for the refined microstructure of shear bands but rarely confirmed using direct quantitative measurement. Here, we employ quantitative precession electron diffraction analysis to uncover shear band microstructure in pure titanium. The results reveal that the microstructure is dominated by early stages of grain subdivision process. Dynamic recrystallization is not as prevalent as perceived conventionally. Our results offer key insights into understanding shear banding and highlight the need for quantitative analyses of shear band microstructure.

AB - Shear banding is an important deformation and failure mechanism in metallic systems, especially at high-rate straining. Dynamic recrystallization was often reported to account for the refined microstructure of shear bands but rarely confirmed using direct quantitative measurement. Here, we employ quantitative precession electron diffraction analysis to uncover shear band microstructure in pure titanium. The results reveal that the microstructure is dominated by early stages of grain subdivision process. Dynamic recrystallization is not as prevalent as perceived conventionally. Our results offer key insights into understanding shear banding and highlight the need for quantitative analyses of shear band microstructure.

KW - dynamic recrystallization

KW - grain subdivision

KW - precession electron diffraction

KW - Shear banding

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UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-85085319086&origin=recordpage

U2 - 10.1080/21663831.2020.1759155

DO - 10.1080/21663831.2020.1759155

M3 - RGC 21 - Publication in refereed journal

SN - 2166-3831

VL - 8

SP - 328

EP - 334

JO - Materials Research Letters

JF - Materials Research Letters

IS - 9

ER -

Grain-subdivision-dominated microstructure evolution in shear bands at high rates

Abstract

Research Keywords

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