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Microstructure and Texture Formation During Near Conventional Forging of an Intermetallic Ti–45Al–5Nb Alloy
Author(s) -
Stark Andreas,
Bartels Arno,
Clemens Helmut,
Kremmer Sascha,
Schimansky FrankPeter,
Gerling Rainer
Publication year - 2009
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.200900117
Subject(s) - materials science , intermetallic , alloy , microstructure , forging , texture (cosmology) , metallurgy , recrystallization (geology) , titanium alloy , deformation (meteorology) , titanium aluminide , dynamic recrystallization , phase (matter) , composite material , hot working , paleontology , artificial intelligence , image (mathematics) , biology , computer science , chemistry , organic chemistry
Texture formation was studied in an intermetallic Ti‐45at%Al‐5at%Nb alloy after uniaxial compression and near conventional forging. Depending on the deformation conditions the texture of the γ ‐TiAl phase is formed by pure deformation components, components related to dynamic recrystallization, or transformation components. This changing corresponds with microstructural observations. The α 2 ‐Ti 3 Al and the α ‐Ti(Al) phase show a similar texture as it is known for Ti and Ti‐base alloys after compressive deformation at elevated temperatures. In contrast to the γ texture, no significant change of the α / α 2 texture was observed in the temperature range between 800 °C and just below the α ‐transus temperature (T α = 1295 °C).
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