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TECHNICAL PAPERS

A Study of Beta Processing of Ti-6Al-4V: Is it Trivial?

[+] Author and Article Information
Y. V. R. K. Prasad

Department of Metallurgy, Indian Institute of Science, Bangalore 560012, India

T. Seshacharyulu, S. C. Medeiros

AFRL/MLMR, Wright-Patterson Air Force Base, OH 45433

W. G. Frazier

Miltec Inc., NCPA Coliseum Drive, University, MS 38677

J. Eng. Mater. Technol 123(3), 355-360 (Mar 01, 2001) (6 pages) doi:10.1115/1.1372708 History: Received November 10, 1999; Revised March 01, 2001
Copyright © 2001 by ASME
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References

Figures

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Microstructural interpretation of processing map for CP Ti-6Al-4V: (a) βt preform and (b) (α+β)e preform
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Variation of tensile elongation with temperature for CP Ti-6Al-4V at a nominal strain rate of 10−2 s−1
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True stress-true plastic strain curves for both preforms of ELI Ti-6Al-4V at 1050°C and different strain rates
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Microstructural interpretation of processing map for ELI Ti-6Al-4V: (a) βt preform and (b) (α+β)e preform
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Variation of tensile elongation with temperature for ELI Ti-6Al-4V at a nominal strain rate of 10−2 s−1
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Microstructure obtained on a βt preform ELI Ti-6Al-4V specimen taken from the center of a billet subjected to a few cogging and resoaking steps near the transus
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Macro picture of a specimen taken from the front end of a rod extruded at 1060°C and 15 s−1 . Extrusion direction is horizontal.
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Correlation of prior β grain size (d) with Zener-Hollomon (Z) parameter for CP Ti-6Al-4V
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True stress-true plastic strain curves for both preforms of CP Ti-6Al-4V at 1100°C and different strain rates
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Variation of β volume fraction with temperature for CP (Sastry et al. 24) and ELI (Cope and Ridley 25) grade Ti-6Al-4V
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Flow chart illustrating the thermomechanical processing steps followed for Ti-6Al-4V and resulting microstructures (VAR: Vacuum arc remelting, VIM: Vacuum induction melting). Steps involving β processing are shaded in grey.

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