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.
Isothermal Aging Precipitate of TB17 Titanium Alloy
2016
Aufsatz (Zeitschrift)
Elektronische Ressource
Unbekannt
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