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Hot ductility behavior of near-alpha titanium alloy IMI834

  • MohammadHadi Ghavam , Maryam Morakabati , Seyed Mahdi Abbasi and Hassan Badri
Published/Copyright: November 17, 2014
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 105 Issue 11

Abstract

The hot ductility of rolled IMI834 titanium alloy has been studied by conducting tensile tests with a strain rate of 0.1 s−1 and temperature range of 750–1 100 °C to obtain the optimum hot working conditions. The alloy showed minimum hot ductility in the lower alpha–beta region in the temperature range 750–950 °C. Further microstructural characterizations showed improvement in hot ductility by increasing temperature, which was attributed to reduction of volume fraction of high strength alpha phase. The best hot ductility was observed at 1 000 °C, i. e. in the upper alpha–beta region. The better hot ductility at higher temperature could be related to the increase in the volume fraction of beta phase and the occurrence of dynamic restoration phenomena. The second decline in hot ductility appeared at higher temperatures in the beta region and was attributed to the high stacking fault energy and self-diffusion of beta phase leading to limitation of dynamic recrystallization.

Keywords: IMI834 titanium alloy; Hot ductility; Flow curves; Microstructure
* Dr. Maryam Morakabati, Namjoo square, Salman Farsi Street, Melli Alley, Khvansaryha Alley, No. 30, 1615967461, Tehran, Iran. Tel.: +982177591539, Fax: +982144562065, E-mail:

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Received: 2014-01-29
Accepted: 2014-05-14
Published Online: 2014-11-17
Published in Print: 2014-11-10

© 2014, Carl Hanser Verlag, München

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https://doi.org/10.3139/146.111118
Keywords for this article
IMI834 titanium alloy; Hot ductility; Flow curves; Microstructure

Articles in the same Issue

  1. Contents
  2. Contents
  3. Original Contributions
  4. Thermodynamic description of the Ta–W–Zr system
  5. Interrelationships of defects, nitride modification and excess nitrogen in nitrided Fe-4.75 at.% Al alloy
  6. Effects of rotating magnetic and ultrasonic fields on the microstructure and mechanical properties of Al-8 wt.%Si alloy
  7. Microstructural control of Ti-46Al-7Nb-0.7Cr-0.2Ni-0.1Si alloy by heat treatment
  8. Structure and mechanical properties of Zn-(5–25) Al alloys
  9. Hot ductility behavior of near-alpha titanium alloy IMI834
  10. The effect of nano-SiO2 on magnetic and dielectric properties of Li–Zn ferrite
  11. Production of aluminum nano-composite reinforced by tungsten carbide particles via mechanical milling and subsequent hot pressing
  12. Short Communications
  13. Microstructure and texture evolution of Mg–Li alloy during rolling
  14. Microstructure and mechanical properties of Ti2AlC-reinforced TiAl composites
  15. Thermal fatigue behavior of cast superalloy Inconel 713LC
  16. Study of structural, morphological and optical properties of S and Cu co-doped SnO2 nanostructured thin films prepared by spray pyrolysis
  17. Synthesis and characterization of zirconium nitride coatings by cathodic arc sputtering technique
  18. Plasmon enhanced scattering and fluorescence in amorphous matrix
  19. Novel preparation of a porous composite insulating scaffold from forsterite and sodium carbonate media
  20. People
  21. Werner Mader, 65 years
  22. DGM News
  23. DGM News
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