Transformations, Recrystallization, Microtexture Texture and Plasticity in Titanium Alloys
We describe different facets of the β to α transformation in titanium alloys. α morphology and distribution have been mapped as a function of β stabilizer content and aging temperature. Recrystallization during thermomechanical processing in the α/β regime has been studied with the help of fine scale, orientation image mapping techniques. We find two distinct recrystallization processes. The first is associated with the well-known α globularisation process An alternative, dynamic recrystallization process is also observed in which newly recrystallized α and β grains form with the Burgers orientation relationship with each other. We call this process epitaxial recrystallization. Finally, we present the role of transformation and recrystallisation texture on the plasticity of titanium alloys through a quantitative EBSD based analysis of slip systems in the α phase, and slip transfer between the α and β phases by TEM.
Prof. Dipankar Banerjee
Materials Engineering
Indian Institute of Science (IISc)
Bangalore - 560012
INDIA
| Phone | +91 80 22932558 |
| Prof. D. Banerjee | |
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| PSPM Processing, Structure and Properies of Materials | |
| Indian Institute of Science |