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Shear band widening mechanism in Ti-6Al-4V under high strain rate deformation

Bisht, A and Kumar, S and Pang, KH and Zhou, A and Roy, A and Silberschmidt, VV and Suwas, S (2020) Shear band widening mechanism in Ti-6Al-4V under high strain rate deformation. In: Journal of Materials Research, 35 (13). pp. 1623-1634.

Full text not available from this repository.
Official URL: https://doi.org/10.1557/jmr.2020.45


In this study, mechanical properties and microstructural investigation of Ti64 at high strain rate are studied using a split-Hopkinson pressure bar method under compression for temperatures up to 800 °C. Flow softening in the mechanical response of material to such loading conditions hints at instability in compression, which increases with an increase in temperature. Microstructural characterization of the deformed material is characterized using the electron-backscattered diffraction technique. It reveals the presence of instabilities in Ti64 in the form of a fine network of shear bands. The shear band width grows with an increase in temperature along with the area fraction of shear band in the material, displaying its improved capacity to contain microstructural instabilities at higher temperature. After a detailed microstructural investigation, a mechanism for shear band widening is proposed. Based on this mechanism, a path generating nuclei within shear bands is discussed. © 2020 Materials Research Society.

Item Type: Journal Article
Publication: Journal of Materials Research
Publisher: Cambridge University Press
Additional Information: The copyright of this article belongs to Cambridge University Press
Keywords: Aluminum alloys; Shear bands; Stress-strain curves; Ternary alloys; Textures; Titanium; Titanium alloys; Vanadium alloys, Electron backscattered diffraction techniques; High strain rate deformation; Mechanical response; Micro-structural characterization; Microstructural instability; Microstructural investigation; Split Hopkinson pressure bar method; Stress/strain relationships, Strain rate
Department/Centre: Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited: 06 Aug 2021 12:01
Last Modified: 06 Aug 2021 12:01
URI: http://eprints.iisc.ac.in/id/eprint/65080

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