Micro-texture regions in rolled Ti-6Al-4V under polarized light

Hijazi, F and Srinivasan, D and Roy, B and Kumar, P and Jayaram, V (2022) Micro-texture regions in rolled Ti-6Al-4V under polarized light. In: Scripta Materialia, 213 .

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Abstract

Identifying micro-texture regions (MTR) in deformed Ti-6Al-4V requires extensive time in electron back-scattered diffraction (EBSD) imaging with a field of view that is limited to only a few millimeters. This study uses a novel method of high throughput identification of MTR using polarized light microscopy (PLM) and validation by correlation with orientation image mapping from EBSD. Reflection of polarized light under crossed polars leads to a difference in contrast depending on the orientation of the c-axis of the α-phase. MTR that are spread over a large area are visible in PLM as bands of contrast and the field of view is large compared to EBSD maps. It is shown that the shape and size of MTR may be captured accurately in PLM, and a one-to-one correspondence is demonstrated with such regions identified by EBSD with an excellent match between the area fraction of MTR calculated using both methods. © 2022

Item Type:	Journal Article
Publication:	Scripta Materialia
Publisher:	Acta Materialia Inc
Additional Information:	The copyright for this article belongs to Acta Materialia Inc
Keywords:	Light polarization; Ternary alloys; Textures; Titanium alloys; Vanadium alloys, Crossed polars; Diffraction imaging; Electron back-scattered diffraction; Field of views; High-throughput; Image mapping; Micro-texture; Novel methods; Polarized-light microscopy; Ti-6al-4 V, Aluminum alloys
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	16 Mar 2022 06:05
Last Modified:	16 Mar 2022 06:05
URI:	http://eprints.iisc.ac.in/id/eprint/71428

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