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Geometrically necessary dislocation density distributions in Ti-6Al-4V deformed in tension

Abstract:

We have used cross-correlation-based analysis of electron backscatter diffraction patterns to map lattice rotations in polycrystalline samples of Ti-6Al-4V before and after moderate (6%) tensile deformation. The sensitivity is improved compared to conventional Hough-based indexing and allows the density of geometrically necessary dislocations (GNDs) to be determined to ∼3 × 1012 m-2 at a step size of 250 nm. In the undeformed sample there were a few grains with GND density significantly highe...

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Publication status:
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Authors


Littlewood, PD More by this author
Britton, TB More by this author
Wilkinson, AJ More by this author
Journal:
ACTA MATERIALIA
Volume:
59
Issue:
16
Pages:
6489-6500
Publication date:
2011-09-05
DOI:
ISSN:
1359-6454
URN:
uuid:6dd6d47b-6d66-45ff-89f0-6294e0a564b2
Source identifiers:
177268
Local pid:
pubs:177268
Language:
English
Keywords:

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