Microtextures and grain boundary misorientation distributions in controlled heat input titanium alloy fusion welds

Microstructures, macrotextures and microtextures in commercial purity titanium and Ti-6Al–4V fusion welds produced by the InterPulse gas tungsten constricted arc welding (GTCAW) technique have been characterised. At the cooling rates associated with the InterPulse technique, α variants sharing a com...

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Bibliographic Details
Published inJournal of physics. Conference series Vol. 241; no. 1; p. 012103
Main Authors Leary, R, Merson, E, Brydson, R
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.07.2010
Subjects
Arc welding
Cooling rate
Fusion welding
Grain boundaries
Microtexture
Misalignment
Physics
Titanium alloys
Titanium base alloys
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Summary:Microstructures, macrotextures and microtextures in commercial purity titanium and Ti-6Al–4V fusion welds produced by the InterPulse gas tungsten constricted arc welding (GTCAW) technique have been characterised. At the cooling rates associated with the InterPulse technique, α variants sharing a common 1120 pole are found to cluster together into groups within prior β grains, leading to large areas where all variants are separated by a misorientation of 60°. These present potential easy slip paths, hence increasing the "effective structural unit size." Characterisation of these microtextures may provide new insight into microtexture-properties relations and the mechanisms of microtextural evolution.
ISSN:1742-6596
1742-6588
1742-6596
DOI:10.1088/1742-6596/241/1/012103