Isothermal Aging Precipitate of TB17 Titanium Alloy
- Resource Type
- article
- Authors
- WANG Zhe; WANG Xinnan; ZHU Liwei; ZHU Zhishou
- Source
- Journal of Aeronautical Materials, Vol 36, Iss 5, Pp 1-6 (2016)
- Subject
- TB17 titanium alloy
isothermal aging
secondary α phase
precipitation
Motor vehicles. Aeronautics. Astronautics
TL1-4050
- Language
- Chinese
- ISSN
- 1005-5053
Transmission Electron Microscope (TEM), X-Ray Diffraction(XRD) and Optical Microscope(OM)were employed to investigate the aging precipitation behavior of a new type of ultra-high strength TB17 titanium alloy. The results show that during heat solution treated in the β phase field followed by aging the secondary α phase is nucleated, precipitated and grew on the β phase matrix,and the precipitated phase is lamellar structure which has burgers relation with the matrix. The secondary α phase content is increased rapidly and finally reach a steady-state as aging time increased and the final product of aging consists of α phase and β phase. there is a good linearity relationship between the content of secondary α phase and the hardness of age hardening. The TB17 titanium alloy isothermal phase transformation kinetics can be described by JMAK equation.