Journal
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE
Volume 47A, Issue 8, Pages 4128-4136Publisher
SPRINGER
DOI: 10.1007/s11661-016-3552-1
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Funding
- QinetiQ
- Lloyd's Register Foundation, a charitable foundation
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The effect of high-temperature deformation and the influence of hot working parameters on microstructure evolution during isothermal hot forging of Ti-6Al-4V in the alpha phase field were investigated. A series of hot isothermal axis-symmetric compression tests were carried out at temperatures both low and high in the alpha stability field [(1153 K and 1223 K (880 A degrees C and 950 A degrees C), respectively], using three strain rates (0.01, 0.1 and 1.0/s) relevant to industrial press forging. The microstructures and orientation of the alpha laths were determined using optical microscopy and electron backscatter diffraction techniques. The experimental results show that there is a change in lath morphology of the secondary alpha phase under the influence of the deformation parameters, and that alpha lath thickness appears to have little influence on flow behavior.
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