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

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

14 Scopus Citations
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Author(s)

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

Detail(s)

Original languageEnglish
Pages (from-to)328-334
Journal / PublicationMaterials Research Letters
Volume8
Issue number9
Online published19 May 2020
Publication statusPublished - 2020
Externally publishedYes

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.

Research Area(s)

  • dynamic recrystallization, grain subdivision, precession electron diffraction, Shear banding

Citation Format(s)

Grain-subdivision-dominated microstructure evolution in shear bands at high rates. / Ma, Xiaolong; Zhao, Dexin; Yadav, Shwetabh et al.
In: Materials Research Letters, Vol. 8, No. 9, 2020, p. 328-334.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review