The Influence of the Heating Method on the Microstructure Evolution of Thermal Deformed TA15 Titanium Alloy

Abstract:

X-ray diffraction and EBSD techniques were applied to investigate microstructure evolution and phase transition of thermal deformed TA15 titanium alloy under different heating methods(β phase zone heating and conventional heating). The results indicate that microstructures of thermal deformed TA15 titanium alloy after water quenching appear grain refinement undergoing these two kinds of heating methods. A large number of primary equiaxed α grains are retained after two phase zone deformation under conventional heating method. Meanwhile more regular arrangement and greater cluster of acicular plate martensite microstructure and clear original β grains are obtained through β phase deformation and water quenching. The diffraction peak of (200) crystal face of Al-rich α phase disappears under β phase zone heating method. The preferential orientation of TA15 titanium alloy after thermal deformation and water quenching is reduced obviously under β phase zone heating method.

• Periodical: Key Engineering Materials (Volume 732)
• Pages: 76-80
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.732.76
• Online since: March 2017
• Authors: Ping Li*, Peng Peng Yao, Ke Min Xue, Guo Qiang Gan
• Keywords: Heating Method, Microstructure Evolution, Preferential Orientation, TA15 Titanium Alloy, Thermal Deformation

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