Electron backscatter diffraction study of dislocation content of a macrozone in hot-rolled Ti-6Al-4V alloy

T. Ben Britton; Soran Birosca; Michael Preuss; Angus J. Wilkinson

doi:10.1016/j.scriptamat.2010.01.010

Electron backscatter diffraction study of dislocation content of a macrozone in hot-rolled Ti-6Al-4V alloy

T. Ben Britton^*, Soran Birosca, Michael Preuss, Angus J. Wilkinson

^*Corresponding author for this work

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

Abstract

We compare the dislocation substructure within macrozone and non-macrozone regions of hot-rolled Ti-6Al-4 V. Hough-based and cross-correlation-based analysis of electron backscatter diffraction (EBSD) patterns are used to establish the grain orientations and intra-granular misorientations, respectively. The set of geometrically necessary dislocations (GNDs) that support measured lattice curvatures and minimize the total GND line energy are calculated. The GND content in the macrozone is approximately twice that in the non-macrozone region, and 〈a〉 GNDs are present at densities ∼10 times higher than 〈c + a〉 GNDs.

Original language	English
Pages (from-to)	639-642
Number of pages	4
Journal	Scripta Materialia
Volume	62
Issue number	9
Early online date	11 Jan 2010
DOIs	https://doi.org/10.1016/j.scriptamat.2010.01.010
Publication status	Published - 1 May 2010

Keywords

Dislocation structure
Electron backscatter diffraction (EBSD)
Macrozone
Rolling
Titanium alloys

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10.1016/j.scriptamat.2010.01.010

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title = "Electron backscatter diffraction study of dislocation content of a macrozone in hot-rolled Ti-6Al-4V alloy",

abstract = "We compare the dislocation substructure within macrozone and non-macrozone regions of hot-rolled Ti-6Al-4 V. Hough-based and cross-correlation-based analysis of electron backscatter diffraction (EBSD) patterns are used to establish the grain orientations and intra-granular misorientations, respectively. The set of geometrically necessary dislocations (GNDs) that support measured lattice curvatures and minimize the total GND line energy are calculated. The GND content in the macrozone is approximately twice that in the non-macrozone region, and 〈a〉 GNDs are present at densities ∼10 times higher than 〈c + a〉 GNDs.",

keywords = "Dislocation structure, Electron backscatter diffraction (EBSD), Macrozone, Rolling, Titanium alloys",

author = "Britton, {T. Ben} and Soran Birosca and Michael Preuss and Wilkinson, {Angus J.}",

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TY - JOUR

T1 - Electron backscatter diffraction study of dislocation content of a macrozone in hot-rolled Ti-6Al-4V alloy

AU - Britton, T. Ben

AU - Birosca, Soran

AU - Preuss, Michael

AU - Wilkinson, Angus J.

PY - 2010/5/1

Y1 - 2010/5/1

N2 - We compare the dislocation substructure within macrozone and non-macrozone regions of hot-rolled Ti-6Al-4 V. Hough-based and cross-correlation-based analysis of electron backscatter diffraction (EBSD) patterns are used to establish the grain orientations and intra-granular misorientations, respectively. The set of geometrically necessary dislocations (GNDs) that support measured lattice curvatures and minimize the total GND line energy are calculated. The GND content in the macrozone is approximately twice that in the non-macrozone region, and 〈a〉 GNDs are present at densities ∼10 times higher than 〈c + a〉 GNDs.

AB - We compare the dislocation substructure within macrozone and non-macrozone regions of hot-rolled Ti-6Al-4 V. Hough-based and cross-correlation-based analysis of electron backscatter diffraction (EBSD) patterns are used to establish the grain orientations and intra-granular misorientations, respectively. The set of geometrically necessary dislocations (GNDs) that support measured lattice curvatures and minimize the total GND line energy are calculated. The GND content in the macrozone is approximately twice that in the non-macrozone region, and 〈a〉 GNDs are present at densities ∼10 times higher than 〈c + a〉 GNDs.

KW - Dislocation structure

KW - Electron backscatter diffraction (EBSD)

KW - Macrozone

KW - Rolling

KW - Titanium alloys

UR - http://www.scopus.com/inward/record.url?scp=77049128535&partnerID=8YFLogxK

UR - https://www.sciencedirect.com/journal/scripta-materialia/vol/62/issue/9

U2 - 10.1016/j.scriptamat.2010.01.010

DO - 10.1016/j.scriptamat.2010.01.010

M3 - Article

AN - SCOPUS:77049128535

SN - 1359-6462

VL - 62

SP - 639

EP - 642

JO - Scripta Materialia

JF - Scripta Materialia

IS - 9

ER -

Electron backscatter diffraction study of dislocation content of a macrozone in hot-rolled Ti-6Al-4V alloy

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Keywords

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