Microstructure and Texture Formation During Near Conventional Forging of an Intermetallic Ti-45Al-5Nb Alloy
Microstructure and Texture Formation During Near Conventional Forging of an Intermetallic Ti-45Al-5Nb Alloy
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DOI：
10.1002/adem.200900117
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发表时间：
2009-12-01
影响因子：
3.6
通讯作者：
Gerling, Rainer
中科院分区：
文献类型：
--
作者：
Stark, Andreas;Bartels, Arno;Gerling, Rainer
研究了金属间化合物Ti-45at%Al-5at%Nb合金在单轴压缩和近常规锻造后织构的形成。根据变形条件的不同，γ-TiAl相的织构是由纯变形成分、与动态再结晶有关的成分或转变成分形成的。这种变化与微观结构观察相一致。α(2)-Ti3Al和α-Ti(Al)相在高温压缩变形后表现出与钛及钛基合金相似的织构。与Gamma纹理相反，在800摄氏度到略低于Alpha-Transsus温度(T-Alpha=1295℃)的温度范围内，没有观察到Alpha/Alpha(2)纹理的显著变化。
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 gamma-TiAl phase is formed by pure deformation components, components related to dynamic recrystallization, or transformation components. This changing corresponds with microstructural observations. The alpha(2)-Ti3Al and the alpha-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 gamma texture, no significant change of the alpha/alpha(2) texture was observed in the temperature range between 800 degrees C and just below the alpha-transus temperature (T-alpha = 1295 degrees C).