Annealing response of the intermetallic alloy Ti-22Al-25Nb

作者：Dey S R^*; Roy Shibayan; Suwas Satyam; Fundenberger J J; Ray R K

来源：Intermetallics, 2010, 18(6): 1122-1131.

DOI：10.1016/j.intermet.2010.02.010

• Titanium aluminides, based on Ti(3)Al
• Texture
• Thermomechanical treatment
• Heat treatment

A hot rolled two-phase Ti-22Al-25Nb (at.%) alloy containing the orthorhombic (O) and beta(B2) phases was subjected to thermal treatment under different conditions. The experiment was aimed to examine the recrystallization response of the beta(B2) phase (static and dynamic) to microstructure and crystallographic texture evolution using scanning electron microscopy coupled with electron backscattered diffraction (SEM-EBSD). Specimens rolled in the two-phase (O + beta(B2)) region consisted of highly deformed beta(B2) grains. The texture was close to that of the typical bcc deformation texture with a few additional texture components. A subsequent heat treatment of these rolled specimens in single beta(B2) phase region was characterized by static recrystallized beta(B2) grains with the final texture partly inherited from as-rolled material. In contrast, specimens rolled in the single beta(B2) region produced beta(B2) grains with the texture similar to that of completely dynamic recrystallized one.

• 出版日期2010-6