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Microstructural evolution through hot working of the single-phase and two-phase Ti-6Al-4V alloy

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Published/Copyright: June 11, 2013
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 102 Issue 1

Abstract

The microstructural evolution of the alloy Ti-6Al-4V was analyzed after hot compression tests in the temperature range of 800–1150°C and the strain rate range of 0.001 s−1 to 1 s−1. The slope of work hardening and that of flow softening were conspicuously higher in the two-phase microstructure than those obtained in the single-phase β region. It was found that in the two-phase region the peak strain, the strain for highest rate of flow softening and the steady state strain were almost independent of the Zener–Hollomon parameter, Z. While in the single-phase region, characteristic strains were dependent on Z. The microstructural observations indicated that globularization in the α phase contributed to the flow softening. It was also shown that the kinetics of globularization decreased with strain rate. Otherwise, it was concluded that dynamic recrystallization comes into operation during hot deformation of the single-phase β microstructure. In the single-phase region the recrystallization softening and the average grain size diminished with strain rate and increased with temperature.

Keywords: Hot compression; Globularization; Dynamic recrystallization; Flow stress
* Correspondence address, Mr. Amir Momeni, AmirKabir University of Technology, Hafez Av., Tehran, Iran., Tel.: +98 912334 9007, E-mail:

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Received: 2010-1-27
Accepted: 2010-10-29
Published Online: 2013-06-11
Published in Print: 2011-01-01

© 2011, Carl Hanser Verlag, München

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  1. Contents
  2. Contents
  3. Editorial
  4. Editorial January 2011
  5. Short Communications
  6. Observation of stacking faults in a scanning electron microscope by electron channelling contrast imaging
  7. Original Contributions
  8. Experimental investigation and thermodynamic calculation of the Fe–Mg–Mn and Fe–Mg–Ni systems
  9. Critical investigation of high temperature gas nitriding of a PM tool steel
  10. Tracing the growth rate changes during vertical directional solidification by electrical resistance measurements
  11. Microstructure and properties of hard magnetic FeCr30Co8 alloy subjected to plastic deformation by complex loading
  12. Microstructural evolution through hot working of the single-phase and two-phase Ti-6Al-4V alloy
  13. Tensile properties of ultrafine grained Mg-3%Al alloy studied at elevated temperature
  14. Microstructural evolution and mechanical properties of Cu-10Cr-0.4Zr filamentary in-situ composites
  15. Al–Fe alloy formation by aluminium underpotential deposition from AlCl3 + NaCl melts on iron substrate
  16. A new approach to monitoring thermal fatigue cracks in die casting moulds
  17. The ability of cast composite technology to enhance ductility of wrought magnesium and alloys
  18. Hot rolling of binary Ti–Nb alloys Part 1: evolution of microstructure and texture
  19. Thermochemical investigations in the tin–phosphorus system*
  20. Luminescence properties of Tb3+-activated silicate glass scintillator
  21. (Fe, Cr)6Nb6Ox phase of the filled Ti2Ni type with × ± 0.75 in the quaternary Cr–Fe–Nb–O system
  22. DGM News
  23. DGM News
https://doi.org/10.3139/146.110455
Keywords for this article
Hot compression; Globularization; Dynamic recrystallization; Flow stress

Articles in the same Issue

  1. Contents
  2. Contents
  3. Editorial
  4. Editorial January 2011
  5. Short Communications
  6. Observation of stacking faults in a scanning electron microscope by electron channelling contrast imaging
  7. Original Contributions
  8. Experimental investigation and thermodynamic calculation of the Fe–Mg–Mn and Fe–Mg–Ni systems
  9. Critical investigation of high temperature gas nitriding of a PM tool steel
  10. Tracing the growth rate changes during vertical directional solidification by electrical resistance measurements
  11. Microstructure and properties of hard magnetic FeCr30Co8 alloy subjected to plastic deformation by complex loading
  12. Microstructural evolution through hot working of the single-phase and two-phase Ti-6Al-4V alloy
  13. Tensile properties of ultrafine grained Mg-3%Al alloy studied at elevated temperature
  14. Microstructural evolution and mechanical properties of Cu-10Cr-0.4Zr filamentary in-situ composites
  15. Al–Fe alloy formation by aluminium underpotential deposition from AlCl3 + NaCl melts on iron substrate
  16. A new approach to monitoring thermal fatigue cracks in die casting moulds
  17. The ability of cast composite technology to enhance ductility of wrought magnesium and alloys
  18. Hot rolling of binary Ti–Nb alloys Part 1: evolution of microstructure and texture
  19. Thermochemical investigations in the tin–phosphorus system*
  20. Luminescence properties of Tb3+-activated silicate glass scintillator
  21. (Fe, Cr)6Nb6Ox phase of the filled Ti2Ni type with × ± 0.75 in the quaternary Cr–Fe–Nb–O system
  22. DGM News
  23. DGM News
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