Abstract
The effect of hot working parameters on the microstructure and texture evolution of the hot-deformed Zr-45Ti-5Al-3V alloy was studied by the electron backscatter diffraction (EBSD) technique. It was found that a high density of dislocations were generated when the alloy was deformed at 700 °C/0.001 s−1 and 800 °C/1 s−1. With the increment in hot-deformation temperature and the decrease in strain rate, the dislocation density decreased due to the increase in dynamic recrystallization (DRX) degree. The discontinuous dynamic recrystallization (DDRX) and continuous dynamic recrystallization (CDRX) mechanisms co-existed during the hot working of the Zr-45Ti-5Al-3V alloy at a true strain of 0.7. The texture evolution of the alloy during hot working was characterized and the texture component mainly consisted of {001}<100>, {011}<100>, {110}<112>, and {112}<110> textures. The volume fractions of {001}<100> and {011}<100> textures obviously rose with the reduction in strain rate, whereas those of {110}<112> and {112}<110> textures gradually decreased. At a given strain rate, an increase trend in the volume fraction of the {001}<100> texture was observed with rising hot-deformation temperature, while the volume fraction of the {011}<100> texture first increased and then decreased. An opposite trend was visible in the {112}<110> and {110}<112> texture compared with {011}<100> textures.
Highlights
The Ti-6Al-4V alloy has been widely used to fabricate the critical parts of compressors, gas turbine aero-engines, and airframes owing to its superior strength and toughness, exceptional workability, and excellent weldability [1,2,3,4]
The effect of hot working parameters on the microstructure and texture evolution of the hot-deformed Zr-45Ti-5Al-3V alloy was studied by the electron backscatter diffraction (EBSD) method
The primary conclusions can be drawn as follows: (1) The strain rate and hot-deformation temperature have an obvious influence on the microstructure and texture evolution of the Zr-45Ti-5Al-3V alloy
Summary
The Ti-6Al-4V alloy has been widely used to fabricate the critical parts of compressors, gas turbine aero-engines, and airframes owing to its superior strength and toughness, exceptional workability, and excellent weldability [1,2,3,4]. It is critical to investigate the DRX behavior and microstructure evolution of the new Zr-45Ti-5Al-3V alloy deformed at different hot working parameters. Numerous research has been executed on the effect of hot working parameters on dynamic recrystallization behavior and microstructure evolution of the metals and alloys [10,11,12,13]. The final microstructure of the Zr-45Ti-5Al-3V alloy after hot working was obviously affected by hot working parameters including deformation temperature and strain rate. In order to control the final microstructure of the Zr-45Ti-5Al-3V alloy after hot working and improve the mechanical properties of the alloy, a deep understanding of the dynamic recrystallization characterization and microstructure evolution of the Zr-45Ti-5Al-3V alloy at various hot working parameters is necessary. The objective of this paper was to reveal the microstructure and texture evolution of the Zr-45Ti-5Al-3V alloy deformed at various hot working parameters by using EBSD and cellular automata (CA) methods
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
